496 works carry all of these threads.
Unidentified Artist · c. 1861-65 (after earlier photograph)
George Newbold, active 1860s · 1860
Bell & Brother, active 1865 - 1875 · 1869
Unidentified Artist · June 26, 1886
Harry Warnecke, 1900 - 1984 · 1940
Unidentified Artist · n.d.a.
Mathew B. Brady, 1823? - 15 Jan 1896 · c. 1870
Allen & Ginter · ca. 1888
Mathew Brady Studio, active 1844 - 1894 · 1860-65
Elliott & Fry, active 1863 - 1962 · August 1907
Harry Warnecke, 1900 - 1984 · 1945
Eugène Constant · 1848–52
Hill and Adamson · ca. 1845
