Who knew? Prior to WWII, the FM band was from about 41.2 to 50.4 MHz:
After the war, the FCC moved the band to the now familiar 88-108 or so. Broadcasters and the 400,000 or so people who had FM receivers at the old band were just out of luck! Wow, I would have been pretty ticked off if I had sunk money in one of those sets.
Anyway, you learn something new every day. See some really nice old radios here, where I got the pic above.