WPA poster warning cancer patients to be wary of persons claiming to be physicians and promising to cure cancer.
Max Plattner
Work Projects Administration Poster Collection (Library of Congress). <a rel="nofollow" class="external free" href="http://memory.loc.gov/service/pnp/cph/3b40000/3b48000/3b48800/3b48897r.jpg">http://memory.loc.gov/service/pnp/cph/3b40000/3b48000/3b48800/3b48897r.jpg</a>