Ivory Soap, 1919
THE TEXT OH LORD THE TEXT.
Two more below the cut
and this one I can't quite explain:
n.b. : there's a flickr group called "Unintentionally Gay" and a good collection (many of which we've seen recently) HERE.
n.b. also: the flickr site known as Populuxe has over 1200 classic ads. WONDERFUL to look at, particularly THIS U.G. GEM, which isn't part of any ad, apparently.