Many small airplane manufacturers fell on hard times when the expected boom in post-war light aircraft sales did not materialize.  This small 1/9th page ad appeared on page 78 of the April 1949 issue of Flying magazine.  It directed readers to send for a brochure on the new 1949 Ercoupe.
<a href="https://en.wikipedia.org/wiki/Engineering_and_Research_Company" class="extiw" title="w:Engineering and Research Company">Engineering and Research Company</a>
1949-04
<a rel="nofollow" class="external free" href="http://ercoupe.com/images/brochad2.jpg">http://ercoupe.com/images/brochad2.jpg</a>