History of character has not yet been written.
- Although this character was originally introduced during DC's Earth-One 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 should be considered apocryphal.
- 150 Appearances of Karen Duncan (New Earth)
- 2 Images featuring Karen Duncan (New Earth)
- Quotations by or about Karen Duncan (New Earth)
- Character Gallery: Karen Duncan (New Earth)