Printed on recto: "Department of Interior, U.S. Geological Survey of the Territories. Prof. F.V. Hayden in charge." Printed from original negative: "121. San Luis Valley and Lake, Sierra Blanca". Handwritten on recto: "WH Jackson Phot. 1874". Stamped on recto: "State Historical and Natural History Society, Denver, Colorado". Handwritten on verso: "San Luis Valley, c.c., P.P. Acc. no. 154", "Neg # F-26,631", "OH526-10"