Wartime canning of fruits, vegetables.
Washington, D.C. : Bureau of Human Nutrition and Home Economics, Agricultural Research Administration, U.S. Dept. of of Agriculture, 
MU Libraries Federal Government Documents Collection
As part of the Victory Garden campaign, women were encouraged to can food that was grown at home. Canning, which is the process of sealing food in cans, tins, or jars, for preservation, was essential so no good food went to waste. In 1917, women preserved over 500,000,000 quart jars of garden produce and by 1918, had stored 1,450,000,000 quart jars.