Food Conservation Train
The state of Pennsylvania used a traveling exhibit and canning demonstration on a train as a clever way to reach multiple cities and populations with one exhibit. The poster announcing the event emphasized education and instruction.
A 50-page exhibit pamphlet (below poster) produced by USFA contained ideas for raising awareness through exhibits and events like "emergency bread" baking contests. Among the practical information about setting up informative displays, the how-to guide also specified a distinction between educational exhibits and commercial exhibits (details from pages 8 and 10).
Poster and photo: Pennsylvania Dept. of Food Supply, Pennsylvania State College, USFA, 1917.
Pamhplet: USFA, 1917.
Sources: Special Collections, National Agricultural Library
The Human Ecology Collection, University of Wisconsin, http://digital.library.wisc.edu/1711.dl/HumanEcol.GraphicExhibits