Inscription: Inscribed in the negative: "9" & '[illeg.]t (trimmed from print); Printed on mount, recto, in letterpress: "WAR DEPARTMENT, CORPS [insignia] OF ENGINEERS, U.S. ARMY// Geographic Explorations and Surveys West of the 100th Meridian// Expedition of 1873 Under the Command of Lieut. Geo. M. Wheeler, Corps of Engrs.// T.H. O'Sullivan, Phot.// No. 13// HISTORIC SPANISH RECORD OF THE CONQUEST// South Side of Inscription Rock, New Mexico, No. 3"; stamped on mount, verso LL, upside down: "DUPLICATE"; LR, sideways: "SURPLUS//DUPLICATE//LIBRARY//OF//CONGRESS" [twice]; C, sideways: "L.C.// ...OF PRINTS"[in circular design]; inscribed in pencil in modern hand on mount, verso, LL: "TOS 1734"; C, sideways: "46987"