6sqft reports that East Harlem’s Riverton Square complex is once again accepting applications for its 7,500-name waitlist for one-, two- and three-bedroom apartments. Become a Harlem Insider! Sign-Up for our Newsletter *Select list(s) to subscribe toHarlem World Magazine Example: Yes, I would like to receive emails from Harlem World Magazine. (You can unsubscribe anytime)Constant Contact…