Cosmos Mindeleff

Cosmos Mindeleff (1863–1938) started his career as assistant to his brother Victor Mindeleff, who was employed by the Bureau of American Ethnology to conduct studies of Pueblo architecture in the 1880s. In 1882, James Stevenson and the Mindeleffs visited Canyon de Chelly and Canyon del Muerto. In later years, Victor and Cosmos Mindeleff continued their research in Canyon de Chelly and Cosmos published the first authoritative archeological map of White House Ruins in 1893. Provided by Wikipedia