"Licensed Experimental Stations" included in "Sessional Paper No. 38, Report for the Naval Service for the Fiscal Year Ending March 31, 1915", from Sessional Papers: Sixth Session of the Twelfth Parliament of the Dominion of Canada (1916, volume 27, page 119). XWA's call letters have traditionally been said to stand for "Experimental Wireless Apparatus". Additional stations granted over the next two years included XWB, XWC, XWD, XWE and XWF in Ontario and Manitoba.
"Radio Department: Broadcasting Stations", Winnipeg Evening Tribune, April 25, 1922, page 5. (Within the "CF" assignments, this first group also included CFCA (Toronto), CFCB (Vancouver), and CFCE (Halifax). In this list, CKCE Toronto should be 450 instead of 45 meters, and for Winnipeg, "CHCE" should be CHCF and "CKbC" should be CKZC.)
