Interesting Extensive Collection of 223 Loose Original Gelatin Silver Photographs, Taken during a Mining Survey Expedition in Italian East Africa in the 1930s, Showing the Party Members Posing next to Various Geological Formations, Rock and Ore Samples, Africans Performing Artisanal Gold Panning, the Obelisk of Axum, Two Ethiopian Megalithic Stellae, Local Villages and People, Mountains and Valleys, Roads, Bridges, &c. Ca. late 1930s.