Partially due to previous legal struggles, the performances at 122 Second Avenue were primarily publicized by word of mouth. The theatre had no sign; the street-level door was labeled "122 Delivery Entrance." There were weekly listings of the productions in the "Village Voice", but an address or a phone number was never listed. Only members could attend, and one had to visit 122 2nd Avenue in person to become a member. By 1967, La MaMa E.T.C. had an estimated three thousand members. La MaMa E.T.C. officially became a nonprofit organization in 1967.