File Mining In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources
File Reports, 1926 Box 14 In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources » Mining
File Mineral Resources In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources
File Reports, 1926 Box 14 In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources » Mineral Resources
File Mining laws and administration In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources
File Clippings, 1935-1939 Box 14 In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources » Mining laws and administration
File Gold mining industry In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources
File Report, 1934 Box 14 In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources » Gold mining industry
File Agriculture In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources
File Report, 1926 Box 14 In: Joseph Ralston Hayden Papers, 1854-1975 » Philippine collection » Economic » Agriculture and Material Resources » Agriculture