When Lucy first recognized Berle as someone famous, she thinks he's Jackie Gleason.
Old Man: (while getting Berle's autograph) I saw you do your act 20 years ago in Cincinnati.
Old Man: Yeah. Two weeks ago in Las Vegas, I saw saw you do the same act.
(Mary Jane has recognized the derelict as Berle)
Lucy: Milton Berle? Ohhh. Oh, I knew his show went off the air, but I never thought he'd come to this.
Mary Jane: I used to watch his show and I thought he'd come to this.
This episode is the second time this season Robert S. Carson has played a character named Mr. Potter. The first was in the season premiere Lucy at Marineland.