Clarion Books

Simon & Schuster was a latecomer to the branded paperback series phenomenon. The series used a CL- prefix up to CL 028 (1968), after which S&S switched to using a portion of the newly-introduced Standard Book Number (SBN) as a series indicator. While the series numbers were roughly sequential, they were not continuous, resulting in runs of sequential numbers with gaps that were likely filled by non-Clarion titles. After 1969, S&S seems to have dropped the series numbers altogether; therefore, I'm only including titles through 1969, as titles after that only carry the Clarion logo and name. Although the SBNs from 1970 on still reflect a loose series idea, they're difficult to identify and list in a thorough manner.