When Dick and Mary are in their office after the dig, Dick gives Mary the ceremonial wedding moon. She hands it back to him and says, "I can't keep this." The moon is in her left hand. The camera cuts to Dick, and he asks why not. The camera cuts back to Mary and she says, "Because it's not mine." The moon is in her right hand.
Actor Harry Groener is listed in the end credits as 'Dr. Breen', while Mary refers to him several times in the dialog as 'Dr. Powell'.