470 works carry all of these threads.
Unidentified Artist · c. 1861-65 (after earlier photograph)
19th century
Fred Hartsook, 26 Oct 1876 - 30 Sep 1930 · c. 1915
Bell & Brother, active 1865 - 1875 · 1867
late 15th–early 16th century, with later additions
Carleton E. Watkins, 11 Nov 1829 - 23 Jun 1916 · 1883
Mathew B. Brady, 1823? - 15 Jan 1896 · 1869
16th century
500–650
George D. Wakely, 1832 - 22 Apr 1922 · 1866
Charles DeForest Fredricks, 11 Dec 1823 - 25 May 1894 · c. 1870
Unidentified Artist · 1862 (printed later)
Unidentified Artist · c. 1907
17th–18th century
American Stereoscopic Co., c. 1895 - 1915 · c. 1860
