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A lot of sanitation pigs ranging in age from 10 weeks to 4 months. Photograph used as Figure 6 in U.S. Department of Agriculture Technical Bulletin 374, 1933.

Image (illustration or photograph) for this item, linking to higher res image.

Citation

Unknown. 1927. “A lot of sanitation pigs ranging in age from 10 weeks to 4 months. Photograph used as Figure 6 in U.S. Department of Agriculture Technical Bulletin 374, 1933..” Special Collections, USDA National Agricultural Library. Accessed April 25, 2024, https://www.nal.usda.gov/exhibits/speccoll/items/show/8069.