[Merrill, Dana B.] (1877 – after 1940). Historically Significant Collection of Two Albums with 79 Original Gelatin Silver Photographs of the Construction of the Madeira-Mamore Railroad in the Brazilian State of Rondonia, Showing Porto Velho, Candelaria, Railway Tracks, Camps, Workers, American Engineers, Construction through the Swamp, Karipuna People from the Mutum-Parana River, Rubber Harvesting, Curing and Transportation, Madeira River, Falls and Rapids, “Francisco Salles” Steamer, &c. Ca. 1908-1911.