Tech's Filing Cabinet - The Tech's Filing Cabinet is a set of pages that link to a vast number of manuals and schematics for all kinds of electronic equipment. Some of these were scanned by One Electron, many are external links. Since these external links may go stale, let me know if you can't find a listed document. Since this part of the One Electron site dates from the original 20 year old design, it is still in the old html format. This will be upgraded over time.
Miscellaneous - This includes both pages from the old One Electron site as well as newer collections.
GE - As mentioned in the provenance link, One Electron has access to a vast collection of documentation from the General Electric CRT Department that date from 1944 to 1981. The GE-related documents are collected in this section.
RCA - As mentioned in the provenance link, One Electron has access to a vast collection of documentation from the General Electric CRT Department that date from 1944 to 1981. There are many RCA documents in the collection, and they are collected here. There are also a few RCA documents from other collections.
Vacuum Tube Products/H.W. Ulmer/MU - Documents and specs from the three companies formed by Harold. W. Ulmer: Vacuum Tube Products, H.W. Ulmer Co., and MU Inc.
Hughes Aircraft - Research papers and specifications by the Hughes Aircraft Co.
Military Documents - Various documents from the U.S. military, ranging from World War II to the 1970s.