500 works carry all of these threads.
Unidentified Artist · n.d.a.
E. & H. T. Anthony & Company, active 1852 - 1901 · c. 1870
Johann Jakob Kornmann (called Cormano) · ca. 1632
Barr & Young, active 1860s · n.d.a.
Mathew Brady Studio, active 1844 - 1894 · c. 1860
Allen & Rowell Studio, active 1874 - 1893? · c. 1870
Powell & Co. · 1865
Georges Jacob · ca. 1786
Mathew B. Brady, 1823? - 15 Jan 1896 · 1869
The Ritz Studio · c. 1895
Unidentified Artist · 1923
Louis de Clercq · 1860 or later
Margaret "Daisy" Sutermeister, 1875 - 1950 · c. 1900
George Adams · 18th century
Timothy H. O'Sullivan, 1840 - 1882 · 1863
