Postcard advertising a book instructing people on how to make money selling postcards from home.
Unknown author<span style="display: none;">Unknown author</span>
1956
<a rel="nofollow" class="external free" href="https://collections.carli.illinois.edu/cdm/compoundobject/collection/nby_teich/id/422015">https://collections.carli.illinois.edu/cdm/compoundobject/collection/nby_teich/id/422015</a>