Printed Circuit Replacement Guide This manual contains a complete listing of Printed Circuits for use in radio and TV sets manufactured from January, 1950 through July, 1958. Each make is listed alphabetically, with Spraque Electric Company replacement Printed Circuits cross-referenced to the original part numbers. Beginning on page 13 we have included a tabulation of all Spraque Electric Company items shown in the replacement section of the manual. For your convenience, this tabulation gives the schematics, ratings, and list price of each unit.