Series:Authentic Science Fiction

From Tuck's Encyclopedia of Science Fiction and Fantasy :

"This magazine began as a paperback book series with long novels only. A    serial began in No. 26, and departments gradually appeared from No. 29. It     is from No. 29 that the title can be considered as a magazine; some U.S.     reprints were used early in its magazine career. Campbell emphasized science     articles during his tenure, but Tubb brought fiction back into prominence.     The magazine was considered to have achieved a good standard when it ceased."

The series/magazine went through the following title changes:


 * Issue #1      - Authentic Science Fiction Series
 * Issues #2-#8  - Science Fiction Fortnightly
 * Issues #9-#12 - Science Fiction Monthly
 * Issues #13-#28 - Authentic Science Fiction
 * Issues #29-#68 - Authentic Science Fiction Monthly
 * Issues #69-#85 - Authentic Science Fiction