I found a schematic for the phonograph, but still looking for one on the radio. the Chassis no. 10A2R. there is nothing on this web site or others that I looked.
David,
In the resources on this site for the Zenith 10-S-599 a notation on the page made reference to Riders 12-23. May want to check out http://www.nostalgiaair.org/PagesByModel/679/M0024679.pdf and see if the schematic on Riders 12-23 is what you need.
Radiodoc
David: Try Great Northern Antiques at www.gn4radios.com. They specialize in Zenith radio restorations, and parts. They also have copies of manuals for most models for about $8 each. You can e-mail Alan at alan@gn4radios.com and see if he has the one you need. Hope this helps.
Steve