In the 70's and 80's there was a magazine called Fetish Times. It was mostly S&M and bondage but sometimes there'd be something about tickling, in the back of the paper there were personal ads for people looking to write to others, and sometimes you'd find someone into tickling, though it was rare. I remember one article in particular with a girl who loved to tickle guys, she talked all about her love for tickling guys' feet. I wish I still had the magazine with that article. Fetish Times was in newspaper form, and always had some interesting artwork on the cover. There were a lot of strange things in it, like amputees or people into enemas.