41-842 is located in Rider's Volume 12 on Philco page 98. It is also found in Beitman's volume 4 (1941) on page 116.
You might want to download Scott Harvey's free
Universal Schematic Locator:
http://plymouthcolony.net/starcity/r...s/service.html
While it won't totally replace the individual indexes it does come in handy as a quick look-up at times for schematics found in Beitman's, Rider's, and Sam's, although I have no idea how thorough it is.
John