
Trost & Trost Architects & Engineers, often known as Trost & Trost, was an architectural firm based in El Paso, Texas. The firm's chief designer was Henry Charles Trost, who was born in Toledo, Ohio, in 1860. Trost moved from Chicago to Tucson, Arizona in 1899 and to El Paso in 1903. He partnered with Robert Rust to form Trost & Rust. Rust died in 1905 and later that year Trost formed the firm of Trost & Trost with his twin brother Gustavus Adolphus Trost, also an architect, who had joined the firm as a structural engineer. Between 1903 and Henry Trost's death on September 19, 1933, the firm designed hundreds of buildings in the El Paso area and in other Southwestern cities, including Albuquerque, Phoenix, Tucson, and San Angelo.
Henry O. Jaastad (1872–1965) was an influential Tucson, Arizona architect. His firm created over 500 buildings and Jaastad was Mayor of Tucson for 14 years. A number of his works are listed on the U.S. National Register of Historic Places for their architecture.

Charles Henry Owsley (1846–1935) was an English-born American architect in practice in Youngstown, Ohio, from 1872 until 1912.

Frederick E. Field was an American architect who practiced in Providence, Rhode Island, and Orlando, Florida, in the period between 1883 and 1927.

Lescher & Mahoney was an American architectural firm from Phoenix, Arizona.

George M. Coombs was an American architect in practice in Lewiston, Maine from 1874 to 1909.
Wilfred E. Mansur (1855–1921) was the most prominent architect in late 19th and early 20th century Bangor, Maine.

Link & Haire was a prolific architectural firm in Montana, formally established on January 1, 1906. It designed a number of buildings that are listed on the National Register of Historic Places.

Charles N. Daniels (1828-1892) was an American architect active in Minnesota, North Dakota, and Washington.
Fitzhugh & Byron was an architectural partnership in Phoenix, Arizona, whose partners were Lee Mason Fitzhugh (1877–1937) and Lester A. Byron (1889–1963). The firm, along with architect Henry Trost in Tucson and George Washington Smith in Ajo, Arizona, is given credit for adobe style revival in the state.

William R. Walker & Son was an American architectural firm in Providence, Rhode Island, active during the years 1881 to 1936. It included partners William Russell Walker (1830–1905), William Howard Walker (1856–1922) and later William Russell Walker II (1884–1936).

William F. Curlett and Alexander Edward Curlett were a father-and-son pair of architects. They worked together as partners under the name of William Curlett and Son, Architects from c. 1908–1916. Aleck Curlett partnered with Claud Beelman as Curlett & Beelman (1919–1932).

Lambert Packard (1832-1906) was an American architect from St. Johnsbury, Vermont.

John James Huddart (1856–1930), known usually as John J. Huddart, was a British born and trained architect who practised out of Denver, Colorado in the United States. At the end of the Nineteenth century he was one of Denver's leading architects, known for his work on public buildings and as a courthouse architect. His practice lasted from 1882 to 1930 and commissions included Charles Boettcher House in Denver, Colorado's Fort Morgan State Armory, Denver's Filbeck Building, and six of Colorado's county courthouses.

The Pioneer and Military Memorial Park is the official name given to seven historic cemeteries in Phoenix, Arizona. The cemeteries were founded in 1884 in what was known as "Block 32". On February 1, 2007, "Block 32" was renamed Pioneer and Military Memorial Park. The Pioneer and Military Memorial Park is listed in the National Register of Historic Places. The historic Smurthwaite House, which is also listed in the National Register of Historic Places, is located on the grounds of the Pioneer and Military Memorial Park and is used as the cemetery's main office. Pioneer and Military Memorial Park is the final resting place of various notable pioneers of Arizona.

Ernest C. S. Holmboe (1873–1954) was an American architect best known for his work in West Virginia.

Robert W. Hill was an American architect from Waterbury, Connecticut. He was one of Connecticut's most important 19th century architects.