Author
Civilian Conservation Corps (U.S.). Company 1709 (Ames, Iowa)
4
Civilian Conservation Corps (U.S.). Company 762 (Custer, S.D)
4
Civilian Conservation Corps (U.S.). Company 2735 (Marysville, Kan.)
3
Civilian Conservation Corps (U.S.). Company 4710 (Blair, Neb.)
3
Civilian Conservation Corps (U.S.). Company 767-C (Trenton, Mo.)
3
Civilian Conservation Corps (U.S.). Company 1708 (Mulberry, Ark.)
2
Civilian Conservation Corps (U.S.). Company 2732 (Broken Bow, Neb.)
2
Civilian Conservation Corps (U.S.). Company 4707 (Outing, Minn.)
2
Civilian Conservation Corps (U.S.). Company 780 (Oakland, Iowa)
2
Civilian Conservation Corps (U.S.). Company 785 (Hot Springs, Ark.)
2
Florida. State Board of Conservation
2
Alabama. Dept. of Game and Fish
1
Alabama. State Land Agent
1
Civilian Conservation Corps (U.S.). Company 1773-V (Maryville, Mo.)
1
Civilian Conservation Corps (U.S.). Company 4498 (Weogufka, Ala.)
1
Civilian Conservation Corps (U.S.). Company 4702 (Burlington, Kan.)
1
Civilian Conservation Corps (U.S.). Company 763 (Tecumseh, Neb.)
1
Civilian Conservation Corps (U.S.). Company 786-C (Fort Riley, Kan.)
1
Civilian Conservation Corps (U.S.). Company 788
1
Civilian Conservation Corps (U.S.). Company 788 (Concordia, Kan.)
1
Florida Geological Survey
1
Hanus Seidel Foundation
1
Indonesia. Direktorat Jenderal Perlindungan Hutan dan Pelestarian Alam
1
Indonesia. Direktorat Perlindungan dan Pengawetan Alam
1
Indonesia. Direktorat Teknologi Pengembangan Sumberdaya Lahan dan Mitigasi Bencana
1
Indonesia. Seksi Perlindungan dan Pengawetan Alam Nusa Tenggara Barat
1
Indonesia. Seksi Perlindungan dan Pengawetan Alam Sulawesi Selatan
1
International Union for Conservation of Nature and Natural Resources
1
Iowa Conservation Commission
1
Iowa State Conservation Commission
1
Jawa Tengah (Indonesia)
1
Martin, W. J.
1
Nepal
1