Jefferson County Courthouse or variation prefaced with Old may refer to:
Reed and Stem is an American architectural and engineering firm. The firm was founded in St. Paul, Minnesota in 1891 as a partnership between Charles A. Reed (1858–1911) and Allen H. Stem (1856–1931), the successful partnership captured a wide range of commissions. The firm was reformed as Wank Adams Slavin Associates in 1961, and adopted the name WASA Studio in 2004.
John Everett Tourtellotte was a prominent western American architect, best known for his projects in Idaho. His work in Boise included the Idaho State Capitol, the Boise City National Bank, the Carnegie Library, and numerous other buildings for schools, universities, churches, and government institutions. From 1922 to 1930, he worked in Portland, Oregon.
Tourtellotte & Hummel was an American architectural firm from Boise, Idaho and Portland, Oregon.
George M. Coombs was an American architect in practice in Lewiston, Maine from 1874 to 1909.
Proudfoot & Bird was an American architectural firm that designed many buildings throughout the Midwest region of the United States. Originally established in 1882, it remains active through its several successors, and since 2017 has been known as BBS Architects | Engineers.
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.
Albert John Gibson was one of the most prominent and well-known architects in Missoula, Montana who designed a number of buildings that are listed on the National Register of Historic Places.
Wayland & Fennell was an architectural firm in Idaho. Many of their works are listed on the U.S. National Register of Historic Places.
George W. Orff (1835-1908), was an American architect of Bangor, Maine and Minnesota.
Pierce & Bickford was an American architectural firm active in Elmira, New York from 1891 to 1932. It was formed as the partnership of architects of Joseph H. Pierce (1855-1932) and Hiram H. Bickford (1864-1929), with later partner Robert T. Bickford (1894-1988).
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).
James Miller Creighton was an American architect who practiced in Phoenix, Arizona from the 1880s to the 1920s. He is considered to be one of Arizona's first architects.
Truman Dudley Allen (1829-1897), commonly known as T. D. Allen or T. Dudley Allen, was an American architect. He moved frequently throughout his career, practicing in Iowa, Minnesota, Nebraska, Ohio and Wisconsin, but most of his prominent works date from his residence in Minneapolis at the close of his career.
Wallace L. Dow (1844-1911), often known as W. L. Dow, was an architect of Sioux Falls, South Dakota. He has been referred to as the "Builder on the Prairie" and was "considered the premier architect of South Dakota in the late 19th century."
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.
George W. Spaulding (1843-1908) was an American architect from Woonsocket, Rhode Island.
Lewis F. Goodrich (1848-1929), frequently known as L. F. Goodrich, was an American architect based in Augusta, Georgia. He designed public buildings in Georgia and South Carolina.
George G. Adams was an American architect from Lawrence, Massachusetts.
James King was an early architect in Idaho. He was the first formally trained architect operating in the state.