World War I
During World War I, the United States Government promoted the cultivation of “war gardens,” changing the name to “victory gardens” after the war was won (Bentley, 1998).
To maximize the utility of war gardens, the Federal Government emphasized a number of food preservation methods, namely canning, as patriotic ventures.
Numerous posters were produced emphasizing the correlation between canning and Allied victory.
Home demonstration agents played a significant role in spreading and supporting home canning initiatives across the country throughout World War I and later, World War II.
This system was established by the Federal Government under the terms of the Smith-Lever Act of May 8, 1914, which provide for definite cooperation between the United States Department of Agriculture and the State land-grant colleges… The county is the extension unit upon which the whole system is based. Here, at the county level, are employed the county agricultural agent, the home demonstration agent, and, in some instances, the 4—H Club agent.
--United States Department of Agriculture. (1951). The home demonstration agent. Retrieved from http://naldc.nal.usda.gov/catalog/CAT87791369
These agents held community meetings and also met with individual families to teach a variety of skills including safe canning practices of the period.
Home demonstration agents also often ran community canning clubs for youths and young adults.
The enrollment for 1914 was 33,173. Of these Club members 7,793 put up 9,091,237 pounds of tomatoes and other vegetables from their tenth acre gardens. These products were put into 1,918,024 cans, jars, and other containers.
--Martin, O. B. & Creswell, M. E. (1915). Canning club work and home demonstration work. United States Department of Agriculture Bureau of Plant Industry. Retrieved from https://archive.org/details/CAT31306849