Bennett Cerf was mentioned on "I Love Lucy" in "Lucy Writes a Novel" (S3;E24): "You had your chance, Bennett Cerf!" In two episodes of the series a copy of Cerf's book "Try and Stop Me" (1944) can be seen among the Ricardo's reading matter.
Fayr Emerson is substituting for regular panelist Dorothy Kilgallen, who has a sore shoulder. Emerson herself did the show with a leg injury so the panel remains seated throughout.
Lucille Ball uses a low, hushed voice to answer. At the time, Ball was appearing on Broadway in the musical "Wildcat." Faye Emerson guesses by saying "Are you a red-headed wildcat?" Lucy says she's lost twelve pounds doing the musical.