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