In the first years of collecting prints of Rubberstamos, I also kept a list of all the contributors, and sent a print of that list to participants.That way the network grew and the mail-artists knew who was using rubberstamps. They also could contact eachother. Besides the address list, there were also pages in it with reprints of the rubberstamps that came in. This booklet grew over the years and is in many hiostoric collections. In the middle of the 90-ies these bookles became more professional.
Below you find a sample of how the newest booklets looked like: