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註釋Contents: June, 1940 -no.11. The dairy industry in the United States. July 1940. -no.12. Planning for the farmer, a short reading list of free and inexpensive material. July 1940. -no.13. Indirect flood damages, a list of references. Aug. 1940. -no.14. Relocation of farm families. Sept. 1940. -no.15. Homestead tax exemption in the United States. Oct. 1940. -no.16. Mate, a list of references. Oct. 1940. -no.17. Exhibits. Nov. 1940. -no.18. Food and cotton stamp plans. Nov. 1940. -no.19. The banana industry in tropical America with special reference to the Caribbean area, 1930-40, a selected list of references. Jan. 1941. -no.20. The sunflower, its cultivation and uses. April 1941. -no.21. Delta county, Colorado. April 1941. -no.22. Relation of environmental factors to cotton fibre length. April 1941. -no.23. Almonda. May 1941. -no.24. Crop and livestock insurance. June 1941. -no.26. Economic aspects of farm tractor operation. June 1941. -no.27. Leake and Union counties, Mississippi. June 1941. -no.28. Okfuskee county, Oklahoma.