China and Siberia mining concessions for the Yuba manufacturing Company of San Francisco file
Corresponence and reports, 1921-22
Maps
Amtorg Trading Corporation contract with the Yuba Manufacturing Company of San Francisco file
Contracts and agreements, 1925-27
Correspondence, 1926-30
Bills of lading, shipping lists, receipts
Specifications for dredging equipment sold to the Chinese government and Japanese and Russian mining companies by the Yuba Manufacturing Company, 1912-1917
Tze-Liu-Tsing District (Eastern Part), mining reports, Korea
Korea file
Preliminary Report, Anjo Property, Korea, Nelson Dickerman, July 5, 1921
Preliminary Report on Placer Claims of the Chosen Kasan Co. in Chosen, Korea, Charles W. Gardner and H. R. Edwards, April 12, 1921
Report of H. R. Edwards on Korean Project, May 4, 1921
"Report on the Yung Hung Placers" (Korea), J.S. Bradford, 1920
Blueprint of Asano Concessions Yeng Byen, Seichikori?, Korea
Malaya file
Mechanical Report on Tin Dredging in Malaya, July 22, 1927
Report on Tin Dredging in Malaya, March 1, 1928
Mining Report on Tin Dredging in Malaya, July 22, 1927
Resoiling and reclamation of rice lands, reports, memoranda, correspondence and drawings
Poland, Giesche Spolka Akcyjna Company (Katowice, Poland), mining reports
"The Mining Informer" (guide concerning wages and working hours of Coolies in China, compiled or written in 1920)
"The World Economic Situation," by Herbert Hoover, 1919
Pro-Hoover campaign pamphlet, 1928
Photographs
55 photos of mining and land reclamation projects in Siberia, 1921-1922
70 photos of scenes in daily life in Siberia, circa 1920
500 photos of dredging equipment sent to the U.S.S.R. from the United States, circa 1947
24 prints of American and European political leaders, 1921-1935