http://www.oldradio.com/archives/people/armstrong.htm
 

http://ieee.cincinnati.fuse.net/reiman/04_1994.html
 

http://users.erols.com/oldradio/ehabio.htm
 

http://www.wfmu.org/LCD/GreatDJ/armstrong.html
 

http://www.njinvent.njit.edu/1998/inductees_1998/edwin_howard_armstrong.html
 

http://www.qsl.net/w2xmn/clubflag.html
 

http://ukdb.web.aol.com/hutchinson/encyclopedia/60/M0002960.htm
 

http://www.wfdu.fm