History of character is unknown.
- This version of the character is exclusive to the continuity of the DCAU and is an adaptation of Captain Cold. The original character was created by John Broome and Carmine Infantino and first appeared in Showcase #8.
- 7 Appearances of Leonard Snart (DCAU)
- 2 Images featuring Leonard Snart (DCAU)
- Quotations by or about Leonard Snart (DCAU)
- Character Gallery: Leonard Snart (DCAU)
- Captain Cold at dccomics.com
- Captain Cold at Wikipedia.org
- Captain Cold at the DC Animated Universe Wikia