Note: #66 may have had limited distribution (either overseas or in military outlets?).

Note: Bilingual flip-book. Printed by Charlton, produced by King Comics. Similar Beetle Bailey, Popeye, and Hi and Lois bilingual flip-books also produced.

Note: A promotional book of King Features Syndicate features designed for limited distribution, usually newspaper editors. The materials include reprints of every feature being offered by King Features at that time, including daily and Sunday comic strip features. The term Blue Book seemed to last from about 1943 to about 1961, but King Features continued doing similar promotional material in later years with different titles, like King Features, The World's Greatest Comics; Famous Artists and Writers; and King Features Dictionary A-Z. Depending on how one reads the cover title each year, various years could have a title read as Blue Book; King Feature Syndicate Blue Book; Blue Book King Feature Syndicate, The Newspaper's Greatest Asset; King Feature Syndicate Blue Book of the World's Finest Features; and The Syndicate of the Stars, Blue Book King Feature Syndicate.

Note: Giveaway series available with purchase of $45.00 in merchandise. Used as a reading skills aid for small children. These issues are indexed under King Reading Library (King Features, 1973 Series) (see http://www.comics.org/series/2144/).

Note: Printed by Charlton, produced by King Comics. A supplementary Math Program created by Audrey V. Buffington, Westminster, Maryland [from indicia]

Note: There are at least two versions of issue #1. Some have a printed ribbon diagonally across the upper right corner of the cover marked "Complimentary". These were intended as a military give-away.

Note: Bilingual flip-book. Printed by Charlton, produced by King Comics. Similar Beetle Bailey, Popeye, and Blondie bilingual flip-books also produced.

Note: Cardstock covers All issues first released in 1977 and reissued in 1979. All reprints from Spanish publications. #4, The Adventures of Robin Hood, indicia reads, "(c) 1977 Editorial Bruguera, S.A. (c) 1977 King Features Syndicate, New York. Impreso en los Talleres Graficos de EBSA, Carretera Nacional 152. Km 21,650 Parets del Valles (Barcelona 1977 - Espana) Deposito legal: B. 49.984 - 1976". A back-cover promo lists 32 titles, though most sources state that only 24 were published. The remainder, planned but possibly never published in English are: 25 A Tale of Two Cities; 26 Ben Hur; 27 Heidi; 28 Little Women; 29 The Mysterious Island; 30 The Pirate; 31 The Phantom Ship; 32 King Solomon's Mines.

Note: Current series formatting information from a November 19, 1992 issue. Actual formatting probably varied over the years. The series is estimated to have started around 1933 from a study of copyright data from the U.S. Copyright Office (http://www.copyright.gov/records/). This is a weekly series that took the proof pages that the syndicate would send to newspapers, copy and reduce them, and then bind them into the weekly publication that was sent to the U.S. Copyright Office to obtain copyright on that material. This series contains mostly syndicated columns, puzzles, and factoids to be used for newspaper publication. The series also contains some comic and editorial cartoon material, probably meant for weekly local newspapers instead of daily newspapers. Probably intended for the U.S. Copyright Office, these copyright books periodically show up for sale, most likely either discarded material from the U.S. Copyright Office or, most likely, through limited subscription and local New York city newsstand sales. Not to be confused with King Features Illustrated Weekly, a pre-packaged magazine which mostly focused on comic and other pictorial material, and was meant to bound within newspapers. It is possible this publication is no longer produced in paper form but instead submitted electronically to the U.S. Copyright Office.

Note: The King Comics Reading Library were mostly previously published stories, re-writtten to be accessible to younger readers or readers with limited reading skills (and re-lettered with mixed case instead of all-caps). Prepared for distribution in schools. Printed by Charlton and World Color Press, and produced by Charlton for King Comics.

Note: Top half of page is comic strip bottom half text. Produced by the educational division of King Features Syndicate, Inc. Prepared by King Features Syndicate and Puck, The Comic Weekly.

Note: Material was prepared by King Features for issue #29. Although finished printing plates for the issue were given to Charlton, they could not be made to fit Charlton's presses which were not industry standard and which caused the delay in the use of this material in the United States. Eventually, Charlton used the material in their issue #35. The material appeared sequentially in Mexico and possibly other countries giving rise to the rumor that a "foreign" edition of #29 existed. In 2018, the Bootleg Brothers fan press published and gave away a limited edition of #29 using the original King cover design and the stories reprinted from Charlton.

Note: Cover title: Popeye the Sailor. Issue #93 was not published. Based on characters created by E. C. Segar.

Note: All 15 issues came in the Popeye Career Awareness Library boxed set with 15 career field posters and 15 job description cards. Multiple copies of individual issues were also available from King Features. Some or all might have been reprinted between 1972 and 1974.

Note: 4 pages. Used to introduce the King Popeye Educational Library Comics.