There are generally three sources of schematics for products of this vintage.
Sams, Riders and Beitman published schematics. Sams usually has the most info like parts lists and photos. Many times you can download Riders and Beitman for free.
Go to the link below. Click on the top check under 1955 of the TV Diagrams section. That will download that pdf file. Look on page 149 of the manual (page 145 of the pdf file). What is the model number by the way?
http://www.americanradiohistory.com/Beitman-Manual.htm