I’m occasionally asked where I find material for this site. Most of it is found at AmericanRadioHistory.com, which has an archive of millions of pages of old radio and electronics publications. Much also comes from Google Books.

For Amateur Radio, a treasure trove of information is the QST Archive, which includes every issue of QST back to 1915. The search engine is not the best, and some of the scans are of rather poor quality. But it’s a great source of information.  (You must be an ARRL member and logged into your ARRL account to view articles.)  All issues of 73 Magazine are also available for free download at Archive.org.

If you’re looking for a more user-friendly version of these two resources, they are available at a reasonable price from Amazon at the links below. The QST CD covers up through 1941, and the 73 CD covers all issues.