Slightly Off Topic, but of interest.
Laurie Powers, grand-daughter of of a top western pulp writer, has been working on a history of the love pulps and Street & Smith's "Love Story" in particular. In 1943 Love Story & about a dozen seemingly random pulps got their Second Class mailing privileges yanked by the Postmaster-General. Based on what's been found by various researchers, this seems to have been a personal CRUSADE against what the P-G considered smut.
Laurie's blog can be found here:
http://lauriepowerswildwest.blogspot.com/You may have to search and/or scroll down a bit to find all the gory details, but the Supreme Court apparently told the P-G to sit down and shut up. (Of course in somewhat politer terms.)