A lot of Stereographic Library six volumes or three book cases (two volumes each) by Keystone View Co. Two full sets of stereo optic photographs cards, titled Telebinoculos, on the spine. Four volumes of Tour of The World, each numbered (1, 100, 397, 906) on the spines. All volumes are marked on the spine below. The large collection of photographs offer a unique review of The World in the decades of 1920s and 1930s from Jerusalem to Greenland, the Philippines to Mesa Verde in Colorado USA. Invaluable historical graphic documents predating the World War II.