Thank you both for posting...
Apparently devoted to the development of helmet diving very little was posted on history of SCUBA diving
Leon Lyons has a private collection/museum in St. Augustine.
As many of you know Leon is the author of the classic very rare - only 1000 printed - expensive ($4 to $5,000) book
Helmets of the deep
I have book number 500 of 1000-- I was fortunate that I knew most of the west coast helmet makers and had them inscribe a note over or near the picture of their helmets... Now at this late date I question its value $$$ and seldom remove it from the safe deposit box--- the joys of bibliomania !
Lovely lovely lady at the end of
@IncreaseMyT s post -- can't say much for the interloper
But I did enjoy the pictures and your effort in sharing-- Keep up the good work!
Sam Miller, 111