I'd like to find out about 485 Madison Avenue studios and control rooms, as well as CBS facilities in NY and other cities. By the way, I have some information about WJSV/WTOP, Washington. Not a great amount, but I think several pages, mostly concerning the Earle Theater, now the Warner Theater. Among other originations from that location was, for a time, where Eric Sevareid had an office and did his broadcasts.
73, Bob Paine KA3ZCI