The Wireless World archive is available here: http://www.americanradiohistory.com/Wireless_World_Magazine.htm
There is a search facility by decade.
All are available as pdf downloads and had a quick flick through the first six (monthly) issues of 1919 brought up some articles of interest.
Feb:
Wireless In Air Navigation. 5pp.
April:
Forward Wireless In Battle – The Last Phase Before The Armistice. 6pp.
Aircraft Wireless Section. 6pp.
Aircraft Notes. 1pp.
May:
Forward Wireless In Battle (pt 2). 4pp.
Aircraft Wireless Section – The Sterling Transmitter. 4pp
Aviation Notes. 2pp.
June:
Aircraft Wireless Section – The Sterling Transmitter (pt2). 5pp.
Aviation Notes. 5pp.
The longer articles are illustrated and there is probably much more of interest hidden away in other articles, comments and reviews.