Series B: Lesson 4, Feeding a city.
Lesson 25, Concentration of production in the meat packing
industry.
Lesson 26, Concentration in the marketing of citrus fruits

The publications of the United States Department of Agriculture
have a wide range of material relating to practical cooperation.
The following selected titles are illustrative.

The threshing ring in the corn belt, Year Book 1918, 247-268.

Boys' Pig Club Work, Year Book 1915, 173-188.

Poultry Club Work in the South, Year Book 1915, 193-200.

How the whole county demonstrated, Year Book 1915, 225-248.

Organization of rural interests, Year Book 1913, 239-258.

Organization of a rural community, Year Book 1914, 89-138.

Cooperative purchasing and marketing organizations, Department of
Agriculture Bulletin No. 547.

Cooperative grain companies, Department of Agriculture Bulletin
No. 371.

Cooperative stores, Department of Agriculture Bulletin. No. 394.

County Organization, States Relations Service Document 65.