A clips video of Allen Ludden's game show openings. They include;

GE College Bowl
Password (62 premiere)
Password (63, first episode after marrying Betty White)
Password (66, "We're in Color!)
Talking Pictures (Pilot)
The Jokers Wild (Pilot)
Win With The Stars
Password (71)
Password All-Stars (74, final episode)
Password (75, final episode)
Stumpers
The Smart Alecks (Pilot)
Liars Club
Password Plus (premiere)
Password Plus (Allen's Return)

I don't own any of these clips.