Dunlop Rubber

This article is about the original Dunlop company. For the company which currently makes Dunlop tyres, see Dunlop Tyres. For other companies which use the Dunlop brand, see Dunlop (brands).

Dunlop Ltd. ^[1]

Formerly	List Pneumatic Tyre and Booth's Cycle Agency Co. Ltd (1889–95) Dunlop Pneumatic Tyre (1895–1901) Dunlop Rubber Co. (1901–67) Dunlop Ltd. (1967–85)
Industry	Automotive, sports equipment
Founded	18 November 1889;135 years ago (1889-11-18)
Founders	Harvey du Cros and John Boyd Dunlop [2]
Defunct	1985;39 years ago (1985)
Fate	Acquired by BTR plc in 1985, becoming a brand, then operated by different companies worldwide after BTR folded
Successor	BTR plc
Headquarters	Fort Dunlop, Erdington, Birmingham , England
Key people	Eric Geddes (Director, 1922–24)
Products	List Tyres Tennis equipment (balls, rackets) Swimming equipment (swimfins, drysuits, wetsuits, weight-belt, snorkel, diving masks)
Brands	Dunlopillo [3] Aquafort [4]
Number of employees	102,000 (1970) [5]
Parent	Goodyear and Sumitomo
Divisions	Dunlop Tyres Dunlop Sport
Subsidiaries	Slazenger (1959–85) George Angus Ltd. (1968–85)

Dunlop Ltd. (formerly Dunlop Rubber) ^[1] was a British multinational company involved in the manufacture of various natural rubber goods. Its business was founded in 1889 by Harvey du Cros and he involved John Boyd Dunlop who had re-invented and developed the first pneumatic tyre: he invented the first practical pneumatic tyres for his child's tricycle. It was one of the first multinationals, and under du Cros and, after him, under Eric Geddes, grew to be one of the largest British industrial companies. J. B. Dunlop had dropped any ties to it well before his name was used for any part of the business. The business and manufactory was founded in Upper Stephen Street, Dublin. A plaque marks the site, which is now part of the head office of the Irish multinational departments store brand, Dunnes Stores.

Dunlop Rubber failed to adapt to evolving market conditions in the 1970s, despite having recognised by the mid-1960s the potential drop in demand as the more durable radial tyres swept through the market. After taking on excessive debt Dunlop was acquired by the industrial conglomerate BTR in 1985. Since then, ownership of the various Dunlop trademarks has become fragmented.

History to 1921

Beginning

John Boyd Dunlop

In 1888, John Boyd Dunlop, a Scottish veterinary surgeon living in Ireland discovered the pneumatic tyre principle. ^[3] Willie Hume created publicity for J. B. Dunlop's discovery by winning seven out of eight cycle races with his pneumatic tyres. ^{[6] [7]} To own the rights and exploit the discovery, the "Pneumatic Tyre and Booth's Cycle Agency Co. Ltd" was incorporated in 1889 and floated by Harvey du Cros, who was, amongst other things, president of the Irish Cyclists' Association. The invitation to du Cros to participate was made by William Bowden, a Dublin cycle agent. J. B. Dunlop, who could see no prosperous future in his discovery, had informally transferred his rights to Bowden. Initially J. B. Dunlop held a 20 per cent stake in the venture. ^[8] The company's first headquarters was at Oriel House, Westland Row.

Pneumatic Tyre

The late 1880s was a period of great demand for John Kemp Starley's new safety bicycles. Pneumatic Tyre began cycle tyre production in Belfast in late 1890, and quickly expanded to fill consumer demand. However, in 1890, J. B. Dunlop's patent was withdrawn. It had been discovered that Robert William Thomson had first patented the pneumatic tyre in 1845. ^[3] J. B. Dunlop and Harvey du Cros together worked through the ensuing considerable difficulties. They employed inventor Charles Kingston Welch and also acquired other rights and patents which allowed them to protect their business's position to some extent. ^[9]

In the early 1890s, Pneumatic Tyre established divisions in Europe and North America, sending there four of du Cros's six sons. Factories were established overseas because foreign patents rights would only be maintained if the company was engaged in active manufacture where its tyres were sold. ^[3] Pneumatic Tyre partnered with local cycle firms such as Clement Cycles in France and Adler in Germany in order to limit the necessary capital expenditure. ^[3] An American business was established in the USA in 1893 with a factory in Buffalo, New York, ^[3] after Harvey du Cros junior was old enough (21) to sign the necessary deeds. ^[10]

In 1893 home manufacture was relocated from Belfast and Dublin to Coventry, the centre of the British cycle industry. The Dublin Corporation had launched a case against Pneumatic Tyre, claiming nuisance from the smell of rubber and naphtha. ^{[9] [11]} Pneumatic Tyre soon spread developing interests in Birmingham. The following year a major interest was taken in their component supplier Byrne Bros India Rubber of Lichfield Road, Aston, Birmingham. The same year du Cros started Cycle Components Manufacturing in Selly Oak to supply inner tubes. ^[12]

Dunlop Pneumatic Tyre

J. B. Dunlop resigned in 1895, and sold most of his interest in Pneumatic Tyre. ^[11] In 1896 Harvey Du Cros persuaded his board to sell Pneumatic Tyre to financier Ernest Terah Hooley for £3 million. ^[13] Hooley drummed up support by offering financial journalists cheap shares and appointing aristocrats to the board, and quickly sold the business again, this time as the Dunlop Pneumatic Tyre Company, for £5 million, ^[13] providing a gross profit to Hooley's syndicate including du Cros of £1.7 million.

Associate and supplier Byrne Bros India Rubber, at their Manor Rubber Mills, Aston Cross, had moved from making tyre and tube components to complete inner tubes and covers. In June 1896 du Cros formed a new company, Rubber Tyre Manufacturing, to acquire Byrne Bros. E. J. Byrne was contracted to be managing director for five years. ^[12]

Dunlop Rubber

From the late 1890s, Dunlop Pneumatic Tyre began to acquire its own rubber mills, and began to process rubber, whereas previously it had assembled tyres using components from other manufacturers. ^[3] In 1901 Dunlop Pneumatic Tyre used its majority holding to rename "Rubber Tyre Manufacturing" to "Dunlop Rubber". Arthur Du Cros replaced E. J. Byrne. ^[14]

From 1900, Dunlop began to diversify from cycle tyres. ^[3] The company manufactured its first motor car tyre in 1900. ^[9] In 1906, a car wheel manufacturing plant was built. ^[3] In 1910 Dunlop developed its first aeroplane tyre and golf ball. ^[3]

Between 1904 and 1909, the French Dunlop subsidiary lost a total of £200,000, as European rivals such as Michelin of France and Continental of Germany overtook it in the motor tyre market. ^[3] In 1909, Dunlop of France, and in 1910, Dunlop of Germany were wholly acquired by the British parent in order to enforce stronger quality control. ^[3]

Amalgamation of Dunlop Pneumatic Tyre and Dunlop Rubber

Share of the Dunlop Pneumatic Tyre Company Ltd., issued 23 May 1912

In August 1912 Dunlop Pneumatic Tyre went out of business though retaining certain financial commitments. It passed its activities to Dunlop Rubber in exchange for shares. Then it changed its name to The Parent Tyre Company Limited. Dunlop Rubber purchased certain of its assets including goodwill and trading rights, and in exchange the tyre company shareholders now owned three-quarters of Dunlop Rubber. The amalgamation was intended to bring about a substantial reduction in overhead and clarify what had been seen as a confusing relationship between the two enterprises when they shared most shareholders. ^[15]

A 1914 Dunlop print advertisement for garden hoses

Arthur du Cros was made managing director and deputy chairman in 1912 and retained that position after his father's death in 1918 when A L Ormrod became chairman through until 1921. For supply, Du Cros selected estates in Ceylon and Malaya for purchase, and by 1917 the company owned about 60,000 acres of rubber plantations. ^[14] In 1916, construction began on the Fort Dunlop site across 400 acres. ^[11] By 1918, Dunlop was the fourteenth largest manufacturing company in Britain, and its only large-scale tyre manufacturer. ^{[9] [1]}

Arthur Du Cros became personally close to the financier James White, and appointed him as Dunlop's financial advisor in 1913. ^[14] By 1919, White had acquired control of the company. ^[3] White speculated on the rubber futures market with disastrous results when the price of rubber collapsed. ^[3] Meanwhile, there were also quality control problems with tyres. ^[3] This came to a head in August 1921 when the company announced a loss of £8 million on the year's trading. ^[3] The company was saved by the intervention of Frederick Szarvasy of the British Foreign and Colonial Corporation. ^[3] White's board member nominees were removed, and Sir Eric Geddes was appointed as chairman. ^[3]

Geddes era diversification

Dunlop Advertising from M. DuMont Schauberg (1925)

From 1924, Sir Eric Geddes began to diversify Dunlop. ^[3] In 1924, the company began to manufacture tennis balls. ^[16] In 1925, F. A. Davis was acquired, which had tennis racket manufacturing expertise. ^{[16] [17]} In 1926 the company acquired Charles Macintosh of Manchester for £2.5 million, and the Dunlop name was applied to footwear and clothing. ^[3] Dunlop opened acquisition discussions with Slazenger in 1927, but without success. ^[16] By 1928 only 72 per cent of turnover was in tyres, compared to 90 per cent in 1920. ^[3]

An advertising campaign in 1928 heralded "the Dunlop way". ^[16] In the late 1920s, Dunlop had manufacturing subsidiaries in the US, Canada, France, Germany, South Africa, Australia, India and Japan. ^[18] By 1930, Dunlop secured an equal market share with its archrival Michelin in France. ^[18]

In 1929, Dunlopillo latex foam was patented. ^[3] In 1933, the commercial production of Dunlopillo products began. ^[3] In 1930, Dunlop was the eighth largest public company in Britain by market value. ^[3]

A worker at the recently opened Dunlop Factory in Cork slicing rubber for tyres (1935)

The inter-war years saw considerable international expansion for Dunlop. ^[3] The German subsidiary was reacquired after the First World War, and by 1929, Dunlop of Germany operated the second largest tyre factory in the country. ^[3] Dunlop built manufacturing facilities in Ireland, South Africa and India during the 1930s. ^[3] In 1932 the Dunlop bridge was built over the Circuit De La Sarthe, home to the Le Mans 24-hour race. ^[19]

The years 1922 to 1937 firmly established Dunlop as a household name. ^[18] By 1939, Dunlop was one of the largest British multinational companies. ^[18]

During the 1930s, Dunlop designed and licensed the production of joysticks and joystick components on British and other allied aircraft - most notably the joystick grip and head on the early Merlin engine Supermarine Spitfires that saw service during the early stages of World War II and the Battle of Britain.

Post war

Dunlop Aquafort swim fins made from mid-1950s to early 1960s

By 1946, Dunlop had 70,000 employees, and sales outlets in nearly every country in the world. ^[20] In 1948 Dunlop invented the self-sealing tyre, which reduced the risk from blowouts. ^[21] In the early 1950s, Dunlop developed Maxaret, the first anti-lock braking system. ^[22] By 1955 Dunlop had almost half of the UK tyre market. ^[23] A report by the Monopolies and Restrictive Practices Commission in that year found that Dunlop and the four other main sellers in the UK market (Goodyear, Avon, Firestone and Michelin) companies had arrangements which resulted in fixed prices. ^[23] These arrangements were forced to change, and Dunlop's market share decreased. ^[1] In July 1956, the Monopolies and Restrictive Practices Commission published a further document with implications for Dunlop products entitled Report on the Supply of Certain Rubber Footwear, ^[24] which covered rubber boots of all kinds including wellingtons and overboots.

In 1952 a group of British military veterans raided Dunlop's annual shareholder meeting to protest against British colonialism and the Malayan Emergency. This protest which took place in the aftermath of the British Malayan headhunting scandal, saw the soldiers throwing leaflets across the room containing both anti-colonial messages and photographs of British troops posing with the decapitated heads of suspected communist and anti-colonial guerrillas. ^[25]

In 1958, Dunlop acquired British rival John Bull Rubber which also included Metalastic. ^[26] Throughout the 50´s Dunlop had manufacturing plants in Brazil and New Zealand.

The Dunlop Aquafort range of underwater swimming equipment, including one- and two-piece dry suits, wetsuits, weight-belt, snorkel, diving mask and swimming fins was manufactured between 1956 and 1962 or so by Dunlop Special Products Limited at Fort Dunlop in Birmingham and distributed by Dunlop Sports Company Limited at Allington House, 136–142 Victoria Street, London. ^[27]

A further factor in Dunlop's decline was the decision during the early 1960s to develop cheaper textile radial tyres rather than the more durable steel-belted radial tyres. ^[1] Dunlop lost market share to manufacturers marketing steel-belted tyres, such as Michelin. ^[28]

Meanwhile, UK productivity and quality was poor. ^[29] Salesmen preferred products from the company's continental factories. ^[29]

Dutch tennis players Tom Okker and Jan Hajer pose with Dunlop and Slazenger rackets in 1964

In 1967, the company changed its name from the "Dunlop Rubber Company Ltd" to "Dunlop Ltd", as it had diversified from rubber. ^[1] At this time, around 60 per cent of sales came from overseas, and tyres represented 60 per cent of company turnover. ^[1]

Sir Reay Geddes, the son of Sir Eric Geddes, became chairman of Dunlop in 1968. ^[30]

In 1968, Dunlop acquired George Angus Ltd of Newcastle upon Tyne, a world leader in the supply of fire hoses and fire fighting equipment. ^[31] That year Dunlop had operating profits of £31.8 million, with net profits of £11.2 million. ^[1] By the late 1960s, Dunlop was the 35th largest company in the world outside the United States. ^[1] In 1970, Dunlop had 102,000 employees. ^[5]

In 1971, Dunlop merged with Pirelli of Italy to form the world's third-largest tyre company after Goodyear and Firestone. ^[1] The merger was a joint venture arrangement where each company took minority interests in the other's subsidiaries, rather than a takeover. ^[32] The merger was not successful, and the joint venture was dissolved in 1981. ^[1] Pirelli was not profitable throughout the entire duration of the merger. ^[33]

The decline of the British car manufacturing industry from 1972 onwards also impacted the core Dunlop business. ^[29] Matters were compounded by the 1973 oil crisis. ^[29]

Takeover and breakup

A classic historic racing Jaguar E-Type hustles over the top of the Dunlop Curve towards the Dunlop Bridge at Circuit de la Sarthe, Le Mans. Originally built in 1932 as an advertising footbridge at the entry to the curve, the iconic bridge was moved in 1965 to its present location at the top of the Dunlop Curve, and the entry to the short straight to the Dunlop Chicane.

As a result of increasing competition in the tyre industry, and the disastrous results of the Pirelli tie-up, Dunlop had amassed massive debts. Sir Reay Geddes stepped down as chairman in 1978 and Sir Campbell Fraser took over. Between 1978 and 1981 Dunlop spent US$102 million on modernising its European tyre business. ^[35] The British workforce was cut from 13,000 to 7,000. ^[35] Angus and the company rubber plantations were sold. By July 1983, the Malaysian businessman Ghafar Baba had built a 26.1 per cent stake in the company. ^[1]

In September 1983, the European tyre business was sold to its former subsidiary, Sumitomo Rubber Industries Ltd of Japan, for £82 million. ^[1] In 1984 the remaining tyre factories in New Zealand and India were sold for £200 million. ^[1] In 1985 the company was acquired by BTR plc for £100 million; ^[36] BTR immediately sold the US tyre business to its management for £142 million. ^[37]

BTR began to divest itself of the Dunlop businesses from 1996 in order to transform itself from a conglomerate into a streamlined engineering company. In 1996, it sold Dunlop Slazenger to its management, backed by private equity group CINVen for £372 million; in 2004 they sold the business to Sports Direct International for £40 million. ^[38]

In 1996, Dunlop Aircraft Tyres Ltd of Birmingham was sold to a group of investors backed by 3i for £10 million. ^[39]

In 1998, BTR sold BTR Aerospace Group, including Dunlop Aviation and Dunlop Precision Rubber, to Doughty Hanson & Co for £510 million to form Dunlop Standard. ^[40] In 2004, Dunlop Standard was sold to Meggitt for £800 million. Meggitt has inherited the original English company, now named Dunlop Holdings Ltd, incorporated in 1896. ^[41]

In 1998, BTR sold its share of the South African subsidiary, Dunlop Africa Ltd, which was itself divided in 2001. The industrial products division was sold to become Dunlop Industrial Products and Dunlop Rubber Mouldings. ^[42] The tyre business, Dunlop Tyres International, was bought by Apollo Tyres of India in 2006. ^[43] Apollo Tyres were never comfortable with, nor fully committed to the Dunlop Brand and sold most of the company, including all of the Dunlop Tyre trademark rights in Africa, to Sumitomo Rubber Industries in 2013. Dunlop Tyres International had owned the rights to various Dunlop brands in a number of countries outside South Africa, and these rights were sold to Sports Direct in 2006. ^[44]

Dunlop Tyres since 1985

Main article: Dunlop Tyres

Sumitomo Rubber Industries sold tyres for road vehicles with the Dunlop brand from 1985 to 1999. In 1999 Sumitomo RI and Goodyear Tire and Rubber Company of the US formed a joint venture. Goodyear obtained the Dunlop tyre assets in Europe and the US, and Sumitomo RI continued to sell Dunlop tyres in other countries.

The Dunlop Tyres company in South Africa was acquired by the Indian company Apollo Tyres in 2007. In December 2013, Apollo Tyres sold most of its South African operations to Sumitomo RI for $60 million (Rs 3.33 billion) including the Ladysmith passenger car tyre plant. Apollo Tyres retained its Durban plant, which manufactured truck & bus radial (TBR) tyres and off-highway tyres used in the mining and construction industries (The Durban plant however closed in 2014 after management failed to maintain profitability). Sumitomo RI had also previously acquired ownership rights for the Dunlop brand in 32 African markets. ^[45] In 2018 Sumitomo RI started manufacturing truck & bus radial (TBR) tyres at the Ladysmith plant. Much of this TBR equipment was acquired from the closed Apollo Tyres Durban plant. Sumitomo RI invested heavily in the Ladysmith plant. By 2018 the plant was almost double the size since they acquired the company in 2013.

See also

• Companies portal

• Dunlop (brands)

References

1. "DOMINANCE TO DECLINE: A CASE STUDY OF THE DEMISE OF DUNLOP" (PDF). Archived from the original (PDF) on 26 January 2014. Retrieved 17 January 2014.
2. About us (history) on Dunlop Europe, 15 Aug 2020
3. Jones, Geoffrey (February 1984). "The Growth and Performance of British Multinational Firms Before 1939: The Case of Dunlop". The Economic History Review. New Series. 37 (1). Wiley on behalf of the Economic History Society Article Stable: 35–53. doi:10.2307/2596830. JSTOR   2596830.
4. Dunlop Aquafort - Product list 1956–62
5. http://www.ebha.org/ebha2007/pdf/AmatoriLavista.pdf ^{[ bare URL PDF ]}
6. The Golden Book of Cycling – William Hume, 1938. Archive maintained by 'The Pedal Club'. Archived 3 April 2012 at the Wayback Machine
7. "Our history". dunlop.eu. Archived from the original on 2 April 2011. Retrieved 6 March 2011.
8. "08 Apr 1939 - No Faith in Tyre Invention". Mail. nla.gov.au. 8 April 1939.
9. Martin Adeney, "Du Cros, (William) Harvey (1846–1918)", Oxford Dictionary of National Biography, Oxford University Press, 2004; online ed., May 2008, accessed 17 Jan 2014]
10. Mr. Harvey Du Cros. The Times, Friday 2 November 1928; p. 19; Issue 45040.
11. "John Boyd Dunlop 1840–1921, Inventor", Jim Cooke, Dublin Historical Record, Vol. 49, No. 1 (Spring 1996), pp. 16–31. Published by: Old Dublin Society.JSTOR   30101131.
12. The Rubber Tyre Manufacturing Company, Limited. The Times, Saturday, 13 June 1896; p. 8; Issue 34916.
13. B. W. Best, "Dunlop, John Boyd (1840–1921)", rev. Trevor I. Williams, Oxford Dictionary of National Biography, Oxford University Press, 2004. Accessed 17 Jan 2014.
14. G. K. S. Hamilton-Edwards, "Du Cros, Sir Arthur Philip, first baronet (1871–1955)", rev. Geoffrey Jones, Oxford Dictionary of National Biography, Oxford University Press, 2004; online ed., Oct 2009. Accessed 17 Jan 2014.
15. "Amalgamation approved. Dunlop Rubber Company (Limited)". The Times, Saturday, 31 August 1912; p. 13; Issue 39992.
16. Grieves, Keith (1989). Sir Eric Geddes: Business and Government in War and Peace. Manchester University Press. p. 112. ISBN   978-0-7190-2345-3.
17. "Dunlop And F. A. Davis, Limited." The Times [London, England] 29 January 1925: 18.
18. Grieves, Keith (1989). Sir Eric Geddes: Business and Government in War and Peace. Manchester University Press. pp. 112–127. ISBN   978-0-7190-2345-3.
19. John Murray Brown in Birmingham and Henry Foy in London (18 March 2014). "Dunlop plant closure announcement branded cynical". Financial Times. Retrieved 19 March 2014.
20. "DUNLOP RUBBER COMPANY LIMITED". nationalarchives.gov.uk.
21. "Motorsport Heritage - Dunlop Motorsport". dunlop.eu. Archived from the original on 9 December 2013. Retrieved 18 January 2014.
22. "maxaret unit - maxaret automatic - brake pressure - 1953 - 1433 - Flight Archive". Flightglobal.
23. Competition Report, 1955 ^[usurped]
24. Monopolies and Restrictive Practices Commission, Report on the Supply of Certain Rubber Footwear, London: HMSO, 1956. Full text retrieved on 22 February 2019 at http://webarchive.nationalarchives.gov.uk/20111202181215/http://www.competition-commission.org.uk/rep_pub/reports/1950_1959/015footware.htm.
25. Poole, Dan (2023). Head Hunters in the Malayan Emergency: The Atrocity and Cover-Up. Pen & Sword Military. pp. 30–31. ISBN   978-1399057417.
26. "1950s photo shows magnificent factory building which was home to major Leicester business". Leicester Mercury. 5 September 2019. Retrieved 11 March 2021.
27. Dunlop Sports Company Limited: "Dunlop introduce Aquafort for your underwater exploration”, Triton Vol. 1 No. 1 (June–July 1956), p. 5; Dunlop Sports Company Limited: "You get long service and comfort from an Aquafort suit", Triton Vol. 6 No. 2 (March–April 1961), p. 1.
28. International Directory of Company Histories (1992) St James Press Vol V, p.252
29. Martin Adeney, 'Fraser, Sir (James) Campbell (1923–2007)', Oxford Dictionary of National Biography, Oxford University Press, Jan 2011 accessed 11 Aug 2014
30. "The Glasgow Herald - Google News Archive Search".
31. "Dunlop's £22m bid for Angus." The Times [London, England] 4 October 1968: 21.
32. Time magazine, 4 January 1971 Archived 22 August 2012 at the Wayback Machine
33. Gianni Toniolo (4 January 2013). The Oxford Handbook of the Italian Economy Since Unification. Oxford University Press, USA. p. 432. ISBN   978-0-19-993670-0.
34. ACO. "Auto News - 24 Heures du Mans 2010 - Le Mans corners : The Dunlop curve and bridge - The official website of 24 Heures du Mans". 24h-lemans.com.
35. Times, Elizabeth Bailey, Special To The New York (6 June 1981). "DUNLOP-PIRELLI TIRE BREAKUP SYMBOLIC". The New York Times. Retrieved 13 March 2017.
36. "Dunlop and BTR Reach an Accord". 9 March 1985. Retrieved 13 March 2017– via NYTimes.com.
37. The Guardian (London) 16 May 1985 "BTR to sell US tyre arm of Dunlop". James Erlichman
38. Telegraph.co.uk 21 March 2001 Archived 8 November 2012 at the Wayback Machine
39. "Dunlop Aircraft Tyres - Manufacturer and Retreader of Aircraft Tires" . Retrieved 13 March 2017.
40. "BTR hives off aero divisions". The Independent. 22 October 2011.
41. Companies House webcheck Archived 29 December 2008 at the Wayback Machine Company number 50091
42. "Dunlop Rubber Mouldings website". Archived from the original on 14 April 2008. Retrieved 9 March 2008.
43. "Apollo Tyres skids 24% on Cooper deal fears". Financial Times.
44. Sports Direct prospectus, 2007 p.147 Archived 10 September 2008 at the Wayback Machine
45. "Apollo Tyres sells South African business to Sumitomo Rubber for Rs 340 crore". The Economic Times. 30 May 2013. Archived from the original on 18 June 2013. Retrieved 2 November 2013.

External links

• Competition Commission Report, 1955: includes a history to 1955 ^[usurped]
• The history of the pneumatic tyre Eric Tompkins, Dunlop Archive Project 1981 ISBN   978-0-903214-14-8
• "Aero Tyre Testing at Fort Dunlop Archived 16 September 2011 at the Wayback Machine " Pathe newsreel, 1968
• Documents and clippings about Dunlop Rubber in the 20th Century Press Archives of the ZBW