The Riverside Quarterly was a mostly sercon fanzine published by Leland Sapiro. Its origins were actually from Inside, a Hugo Award-winning fanzine of the 50s.
Sapiro was an acquaintance of Jon White, the final editor of Inside and was brought in as a partner. He was extremely helpful in getting the final two issues published, both in providing material and covering some of the printing costs and in the summer of 1964, White turned the fanzine entirely over to Sapiro.
Sapiro preferred a new name of Riverside Quarterly, and that summer's issue was titled, transitionally, Inside/Riverside Quarterly. The new title came from Riverside Drive in New York, the location of a famous fan abode (see Riverside Dive) in the 50s. The first issue of RQ came out in 1964, and the numbering was restarted at V1N1. It continued publication, at times sporadically, into the 1990s under Sapiro before it eventually became extinct.
The contents tended to be quasi-academic and fairly dry.
