• ___ Laboratories (Chicago pharmaceutical company)
• 'Flatland' author Edwin A. ___
• 40's-50's comedy team member
• Broadway director of Pal Joey
• Bud of Buck Privates
• Comedy legend Bud
• Costello's costar
• Costello's crony
• Costello's partner
• Costello's straight man
• Half of a comic duo
• Half the Who's on First? team
• Jack who wrote In the Belly of the Beast
• One of a classic comedy couple
• Portrayer of Who's manager
• Straight half of a comedy team
• Straight man Bud
• The Pajama Game director
• What is on second speaker
• Who's on first comic
• Who's on first speaker
• Who's on First straight man
• Who's on First? comedian
• Who's on First? participant
• Who's on first? team member