For some time I have been compiling an index to receiving tube manuals. It is currently complete through 1955, and can be downloaded or read in PDF format from:
A list of the manuals included, with links to copies available online, is at:
Special note - do not use the download link at the bottom of the page, as I have not yet upgraded captcha on my site. Use the first link above.
Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg, VA
Dale H. Cook