When Lyman Duggan started TPUG (at that time, he called it "Club 2001" after Commodore's only computer, the PET 2001), he just phoned the 15 or so members to tell them about a new meeting.
Coffee and doughnuts were served at the meeting, and Lyman
had a tray of cassette tapes for sale, which contained public domain programs.
By the time membership rocketed to 30 or 40, a single sheet of paper was mailed to interested persons, giving meeting details and anything else that Lyman
could think of to fill out the sheet - speakers, programs, tips or whatever.
had to leave to take up work in Florida, and TPUG reformed as a user group.