Adam Hats enameled signs, 1937

J.E. Hansen (Editor).  A Manual of Porcelain Enameling.  Published for the Ferro Enamel Corporation by The Enamelist Publishing Company, 1937.

At its height, Adam Hats had around 90 retail locations in the U.S.  The signs above would have been for authorized agents, department stores not owned or operated by the company.  

From 1944-1945, the company sponsored a spooky radio program entitled The Strange Dr. Weird. You can listen to many of the old episodes on the Internet Archive.

With the introduction of the Mercury Cougar in late 1966, Adam Hats produced a "Cougar"-styled hat which contained a small Mercury Cougar emblem on the band of the fedora.