These are tribute sites for stations where Bob Hagen worked and other radio resource sites.
WNEW Tribute Site:
Maintained by Edward M. Brown, son of WNEW newscaster Ed Brown.
WMCA Tribute Site:
Deals with the Top-40 era before Bob Arrived in 1970
Cleveland Radio Archives Project:
Histories of WHK, WERE and KYW.
New York Radio News - 1978
There's a picture of Bob in the WNEW Section
Recordings of the golden age of Top 40 radio, featuring segments from WHK, KYW, WCFL and WMCA..
More recordings of the golden age of Top 40 radio.
A "where are they now" service for radio
Big Apple Airchecks
Bob is mentioned on the In Memoriam page