The history of Progressive Addition Lenses on Wikipedia really sucks, its thin and really vague. I know some of you were there first and second hand. I don't know if Dave Ripps still posts on here (I didn't see him in the members list) but his father Irving developed one of the first No-line bifocals in the 1950's. Any good history out there that isn't well known about Progressives, and should be?
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