Peter Sanderson

In April 2017, Sanderson contributed a segment of a retrospective article on his late mentor, Mark Gruenwald for Back Issue! magazine #103. The segment focused on the academic and scholarly nature of Sanderson and Gruenwald's working relationship.

In April 2017 Sanderson was hospitalized with hip fracture resulting from a fall. This prevented him from writing a retrospective article on his mentor, Mark Gruenwald, that he had suggested to editor Michael Eury for the April 2018 issue of Back Issue! magazine, though he did contribute a segment for that article.

As a teenager, and later, at Columbia University, Sanderson's first involvement in the comics field was as a "letterhack," a frequent contributor to comic book letter columns. His missives impressed DC Comics editor Julius Schwartz enough for Schwartz expand the letter columns in some titles to a second, separate page (such as "Flash-Grams — Extra", "Letters To the Batcave — Extra", and "JLA Mailroom — Special Peter Sanderson Edition") to facilitate Sanderson's analysis. In the early 1980s Sanderson wrote for comic fanzines.

Sanderson writes an online column entitled Comics in Context, which (in Sanderson's own words) is "a weekly series of critical essays on comics, cartoon art, and related subjects" (those "related subjects" can run the gamut from film adaptations of comic books, to other media that have been influenced by comics, such as Star Wars). The series started on July 8, 2003 on the website IGN, but then moved to the Kevin Smith-affiliated website Quick Stop Entertainment on June 23, 2006; according to Mr. Sanderson, the "Powers That Be" in charge of IGN's comics section began to tamper with the titles of his columns and complain about some of the topics he covered, whereby a "change of scenery" was necessary. After a seventeen-month hiatus, Comics in Context returned to the newly rebranded A Site Called Fred on January 19, 2010.

Peter Sanderson Jr. (born April 25, 1952) is a comic book critic and historian, as well as an instructor/lecturer in the New York area concerning the study of graphic novels/comic books as literature.

From there, Sanderson broke into the comic book industry proper. He was first hired by DC Comics, where he was given the task of reading every comic book published by the company since 1935. His research was used by Len Wein to write Who's Who in the DC Universe. Sanderson then went to work for Marvel Comics, where he was mentored by writer/editor Mark Gruenwald as Marvel's first scholar and archivist, which saw Sanderson placed in charge of Marvel's library. Sanderson contributed as a researcher on the various Official Handbook of the Marvel Universe series in the 1980s and early 1990s.