Harford County is located in the U.S. state of Maryland. As of the 2020 census, the population was 260,924. Its county seat is Bel Air. Harford County is included in the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area, which is also included in the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area.
Port Deposit is a town in Cecil County, Maryland, United States. It is located on the east bank of the Susquehanna River near its discharge into the Chesapeake Bay. The population was 653 at the 2010 census.
Delta is a borough in York County, Pennsylvania, United States, and one of the southernmost communities in Pennsylvania. The population was 728 at the 2010 census. It is served by the South Eastern School District which provides a public education.
The serpentine subgroup are greenish, brownish, or spotted minerals commonly found in serpentinite rocks. They are used as a source of magnesium and asbestos, and as a decorative stone. The name is thought to come from the greenish color being that of a serpent.
Serpentinite is a rock composed of one or more serpentine group minerals, the name originating from the similarity of the texture of the rock to that of the skin of a snake. Minerals in this group, which are rich in magnesium and water, light to dark green, greasy looking and slippery feeling, are formed by serpentinization, a hydration and metamorphic transformation of ultramafic rock from the Earth's mantle. The mineral alteration is particularly important at the sea floor at tectonic plate boundaries. Serpentinite has been called serpentine or serpentine rock, particularly in older geological texts and in wider cultural settings.
Soldiers Delight Natural Environmental Area is a nature reserve near Owings Mills in western Baltimore County, Maryland, USA. The site is designated both as a Maryland Wildland and as a Natural Environment Area and is part of the Maryland Wildlands Preservation System. The site's protected status is due to the presence of serpentine soil and over 39 rare, threatened, or endangered plant species along with rare insects, rocks and minerals.
Maryland Route 165 is a state highway in the U.S. state of Maryland. The state highway runs 20.38 miles (32.80 km) from Baldwin north to the Pennsylvania state line in Cardiff, where the highway continues as Pennsylvania Route 74. MD 165 passes through western and northern Harford County, where it connects the communities of Fallston, Jarrettsville, Pylesville, and Whiteford. The state highway was constructed as part of MD 24 through Pylesville and Whiteford in the late 1910s and early 1920s. MD 165 from Baldwin through Jarrettsville to west of Pylesville was built in the late 1920s and early 1930s. When MD 24 was rerouted in 1933, MD 165 was extended along that highway's old routing through Pylesville and Whiteford, much of which was relocated in 1960.
The Maryland and Pennsylvania Railroad, familiarly known as the "Ma and Pa", was an American short-line railroad between York and Hanover, Pennsylvania, formerly operating passenger and freight trains on its original line between York and Baltimore, Maryland, from 1901 until the 1950s. The Ma and Pa was popular with railfans in the 1930s and 1940s for its antique equipment and curving, picturesque right-of-way through the hills of rural Maryland and Pennsylvania. Reflecting its origin as the unintended product of the merger of two 19th-century narrow gauge railways, the meandering Ma and Pa line took 77.2 miles (124 km) to connect Baltimore and York, although the two cities are only 45 miles (72 km) apart in a straight line.
Pylesville is an unincorporated community and census-designated place (CDP) in Harford County, Maryland, United States. The population was 693 at the 2010 census. It is part of the Baltimore metropolitan area. Legend says the town was named after Brandon Pyles. Until 1958, this community was served by the Maryland and Pennsylvania Railroad at milepost 40.3.
Maryland Route 136 is a state highway in the U.S. state of Maryland. The state highway runs 30.04 miles (48.34 km) from MD 7 near Abingdon north to MD 23 in Norrisville. MD 136 is an L-shaped route that connects the communities of Creswell, Churchville, Dublin, and Whiteford in eastern Harford County with each other and with Norrisville in the county's northwestern corner. The state highway is connected to the cities of Aberdeen and Havre de Grace via its connection with MD 22. MD 136 is also linked to the county seat of Bel Air from the east through MD 22, from the northeast by U.S. Route 1, from the north via MD 24, and from the northwest by MD 23. The state highway starts on the coastal plain near the Chesapeake Bay and crosses Harford County's two main tributaries of the Susquehanna River, Deer Creek and Broad Creek, while traversing a wide swath of the Piedmont. MD 136 is the second longest Maryland state highway entirely within one county after MD 235.
Dublin is an unincorporated community in Harford County, Maryland, United States. Dublin was founded in the early 19th century by George McCausland and a friend who migrated from Dublin, Ireland.
Proctor House, also known as the Cassandra Gilbert House, is an historic home located at Bel Air, Harford County, Maryland, United States. It is a two-story detached Carpenter Gothic style cottage with board and batten siding, constructed between 1860 and 1873 and enlarged about 1884. The interior features an arched slate mantel painted to resemble several colors of inlaid marble.
Slate Ridge School is a historic school located at Whiteford, Harford County, Maryland. The main block of the building is two stories, constructed of brick with a slate hip roof and a small wooden cupola in the center. It was built in 1912, and designed by the Baltimore architect Otto Simonson. A narrow hyphen containing a stairwell and corridor connects the main block to a similar two-story rectangular block and a one-story wing containing a stage and gymnasium, added just after World War II. It was used until about 1980.
Whiteford is an unincorporated community in Harford County, Maryland, United States. The community has historically had a strong Welsh heritage, which is reflected in the local architecture.
Whiteford–Cardiff Historic District is a national historic district at Cardiff and Whiteford, Harford County, Maryland, United States. It encompasses portions of two communities in northern Harford County that were historically associated with slate production during the late 19th and early 20th centuries. It contains 140 contributing resources including four vernacular Welsh cottages dating to about 1850. The Whiteford–Cardiff area is noted for its strong Welsh ethnic identity, which is reflected in the architecture of the area.
Verd antique, also called verde antique, marmor thessalicum, or Ophite, is a serpentinite breccia popular since ancient times as a decorative facing stone. It is a dark, dull green, white-mottled serpentine, mixed with calcite, dolomite, or magnesite, which takes a high polish. The term verd antique has been documented in English texts as early as 1745.
Remington is a neighborhood in northern Baltimore bordered to the north by Hampden, Wyman Park, and Johns Hopkins University and to the east by Charles Village. The southernmost boundary is North Avenue and the long southwestern boundary is formed by Falls Road in the I-83 corridor. The neighborhood is split between two Baltimore City Council Districts.
The Mason and Dixon West Line Milestone Markers 76 and 77 are historic objects located in Frederick County, Maryland and Adams County, Pennsylvania, United States, near the community of Harney, Maryland. They are two of the original milestones that mark the Mason-Dixon line between the states of Maryland and Pennsylvania. Oolite limestone was quarried and carved on the Isle of Portland in the English Channel. Both were part of the third shipment of milestones and they arrived in Baltimore in June 1767. Stones from this shipment were placed in 1767 to mark mile 64 and miles 66 through 132 on the West Line. Both of these sites were surveyed on August 24, 1765. Milestone 76 was set on October 13, 1767. Milestone 77 was set the following day 125 yards (114 m) to the east of its true location, which is in the middle of Marsh Creek. It is one of two milestones intentionally offset due to the challenges of its true location.
