530 works carry all of these threads.
Alexander Gardner, 17 Oct 1821 - 10 Dec 1882 · c. 1860
Bell & Brother, active 1865 - 1875 · 1869
Pach Brothers Studio, active 1867 - 1993 · c. 1880
Francis James Mortimer, 1874 - 1944 · 1906
Mathew Brady Studio, active 1844 - 1894 · 1864
Barr & Young, active 1860s · n.d.a.
Frederick Gutekunst, 25 Sep 1831 - 27 Apr 1917 · c. 1890
Unidentified Artist · c. 1861-65 (after earlier photograph)
Mathew Brady Studio, active 1844 - 1894 · c. 1865
Carleton E. Watkins · 1867
Harry Warnecke, 1900 - 1984 · 1940
Powell & Co. · 1865
Unidentified Artist · c. 1870
Harris & Ewing Studio, active 1905 - 1977 · c. 1928
José María Mora, c. 1847 - 18 Oct 1926 · c. 1880-85
Unidentified Artist · after 1870
