11. Volume 12, Number 2: Agricultural history Collection: Core Historical Literature of Agriculture Publisher: Agricultural History Society Publication Place: Fargo, N.D. Date: 1938 Format: Issue
12. Volume 12, Number 3: Agricultural history Collection: Core Historical Literature of Agriculture Publisher: Agricultural History Society Publication Place: Fargo, N.D. Date: 1938 Format: Issue
13. Volume 12, Number 4: Agricultural history Collection: Core Historical Literature of Agriculture Publisher: Agricultural History Society Publication Place: Fargo, N.D. Date: 1938 Format: Issue
14. Number 708: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1938 Format: Issue
15. Number 688: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1938 Format: Issue
16. Number 704, Edition Reprint Mar 1946: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1938 Format: Issue
17. Number 702: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1938 Format: Issue
18. Number 689: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1938 Format: Issue
19. Number 685: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1938 Format: Issue
20. Number 696: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1938 Format: Issue