The Jetsons Meet the Flintstones

Elroy Jetson invents a time machine that takes him back to prehistoric times, where he meets the Flintstone family.

• 
  Mel Blanc

  Barney Rubble / Dino / Mr. Spacely (voice)
• 
  Daws Butler

  Elroy Jetson / W.C. Cogswell / Henry Orbit (voice)
• 
  Don Messick

  Astro / R.U.D.I / Mac / Announcer / Store Manager / Robot (voice)
• 
  Henry Corden

  Fred Flintstone / Knight (voice)
• 
  Hamilton Camp

  Turk Tarpit (voice)
• 
  Julie McWhirter

  Betty Rubble / Jet Rivers / Investor / Panelist / Harem Girl (as Julie Dees) (voice)
• 
  George O'Hanlon

  George Jetson (voice)
• 
  Penny Singleton

  Jane Jetson (voice)
• 
  John Stephenson

  Mr. Slate / Moderator / Investor / Poker Player (voice)
• 
  Brenda Vaccaro

  Didi (voice)