These are free. As well there is a "Fundamentals of Radio Communications" book by available (hardcover book) Abraham Sheingold and a handbook for Radio Set SCR-274-N. These were known as the Command Set.

http://jproc.ca/rrp/rrp3/lanc_scr274.html

For more information contact

Alison Mercer, MA
Curator
Air Force Museum of Alberta
4520 Crowchild Trail SW
Calgary Alberta Canada
T2T 5J4
403-410-2340 Ext 2639

You can also e-mail Alison at alison@themilitarymuseums.ca