History of character has not yet been written.
- Although this character was originally introduced during DC's Earth-Two era of publication, their existence following the events of the 1985–86 limited series Crisis on Infinite Earths remains intact. However, some elements of the character's Pre-Crisis history may have been altered or removed for Post-Crisis New Earth continuity, and no longer apply.
- Mortimer Jibbett first appeared as a baby in the first "Scribbly" story in The Funnies #2, published by Dell Comics, November 1936. In 1939 creator Sheldon Mayer moved to All-American Comics and took "Scribbly" with him, with All-American Comics #1 being the strip's first DC appearance.
- 55 Appearances of Mortimer Jibbet (New Earth)
- 7 Images featuring Mortimer Jibbet (New Earth)
- Quotations by or about Mortimer Jibbet (New Earth)
- Character Gallery: Mortimer Jibbet (New Earth)