Beinecke Rare Book and Manuscript Library > [No. 1310. Old South Shaft Ore Quarry, Tough-nut Mine. Part of Town of Tombstone. Dragoon Mountains, with Cochise Stronghold in back-ground, Arizona]
A mammoth plate is a photographic negative plate size, usually 18 by 21 inches (53.5 x 45.7 cm.) with photographic prints made through contact printing.