Mark Hodges, KØKNF, sent this one to me on March 8, 2023. Check it and some of its related links, but before you do, get a cup of coffee ... cause you will be stuck to your cell phone or computer for quite a while.
James Lutenberg, NØOBV, submitted the following seven links
50’s and 60’s ham radio gear and lot of links to other ham stuff
More stuff than you can read in a lifetime
73 Magazine (Amateur Radio Today)
Lots of electronics/radio stuff Old and new
Index of Military manuals
All kinds of stuff, lots in Russian search on amateur radio and ham radio will find lots of stuff.