2022-07-152022-07-1519uuhttps://doi.org/10.31096/-SSP023https://hdl.handle.net/10177/17347Translation: Flies spread infection. Protect food from them. ; Print Run: 25,000positives (photographs)9 5/8 x 14 1/8Educational use is permitted without permission. Permission is required for additional uses. See http://library.willamette.edu/external/commons/conditions_of_use/ for more information.http://rightsstatements.org/vocab/InC-EDU/1.0/Image