[Today’s run: 2.8]
Back in the old days both General Electric and RCA published nice newsletters for amateur radio consumption. They talked about the latest tubes and gadgets and gave circuits and examples that hams could follow.
GE HamNews was bi-monthly. A search of the googleplex shows volume 1 number 1 came out in May, 1946. Issues through 1963 are available online.
RCA HamTips started in 1938 and went into 1970. They started out monthly and ended up quarterly.
Thanks to n4trb.com for having these available to the whole world.