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1988 (Jan.) - Jack Hanna
AllDavidLetterman
Sep 17, 2014
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Late Night With David Letterman July 6, 1988
Tributes to David Letterman, Part 15 of 31: Jack Hanna 1985, 2015
Animal Bloopers with Jack Hanna (1994) (VHS)
The Complete Works Of Lyle The Intern | Letterman
Unscripted: Jack Hanna regrets 1972 accident
1989 (March) - Jack Hanna
Jack Hanna's Into the Wild
Classic Dave - dave roams the halls of NBC, 8/21/87
The First Stupid Human Tricks On "Late Night" | Letterman
Fan Request: Jack Hanna's Giant Owl Escapes | Letterman
Stupid Pet Tricks, 3/9/1995. The Late Show With David Letterman.
Jack Hanna Bitten by a Beaver - David Letterman December 1988
Jack Hanna on "Late Night with David Letterman"
David Letterman interview, Tonight Show with Johnny Carson - July 13, 1984
Jack Hanna 40th Hanna-versary Special
Stupid Pet Tricks
Jack Hanna Collection on Letterman, Part 4 of 11: 1993-1997
Baby Cheetah, Giant Tortoise & a Reindeer w/ Jack Hanna
David Letterman's Stupid Pet Tricks - March 22, 1989 - Full Segment
Jonathan Winters on the Tonight Show - 1988