Back in 1986, when I was only somewhat aware tickling existed as a distinct fetish and that there were "adult" magazines devoted to bondage, I ventured my scared teenage ass into a porno shop in NYC's Times Square ... and laid eyes on a magazine called "Knotty"! Recently came across a picture of the cover of that particular issue - not great by today's standards, but back then ... check what the smiling blonde in the insert is doing!
http:reds-realm.net/market/knot4_03.jpg
http:reds-realm.net/market/knot4_03.jpg