1895–1905
Ford Foundation, 1857
Ford Foundation, 1880
Ross J. Kelbaugh, 1895
Ross J. Kelbaugh, 1855
Ross J. Kelbaugh, 1840
Ford Foundation, 1889
Keystone View Company, 1897
Ford Foundation, 1916
Ross J. Kelbaugh, 1864
Keystone View Company, 1900
Ford Foundation, 1855
