Keep in mind there used to be both Sig Erson and Babe Erson Cams. Two separate companies. I believe Sig Erson Cams evolved into Erson Cams.

Babe Erson seemed into the more "fringe" applications rather than the mainstream. I had one of his BBC turbo cams on a dually until a couple of years ago when it lost a lobe. I remember seeing his decals on 1/4 midget cars, rally cars, oddball stuff.

If you search the web you may be able to find someone who still has a catalog.

Regards, Mark