Factual errors: Selena's lawyer informs her that the prosecutor in her murder trial is being sent from Portland. The prosecutor would in fact have been sent from Augusta, the State capitol. (Although the book was set in New Hampshire, the film is set in Maine.)
Anachronisms: "You'll Never Know" wasn't introduced until 1943 (by Alice Faye in Hello Frisco Hello), but is played here at a 1941 Graduation ceremony.
Factual errors: Mike Rossi and Dr. Swain are driving in a car and they come to a stop sign. The sign is red. All stop signs were yellow (with little round glass reflectors in the letters) in the 1940s (the time of this picture) and stop signs were not changed to red until the mid 1950s.
Anachronisms: Allison plays classical music on an LP (33 1/3) record changer. The LP was not developed until 1949.
Errors in geography: In an exterior towards the end of the film, a sign can be seen advertising the Camden Maine Rexall Drug Store which doubled for Peyton Place.
Crew or equipment visible: When the army bus taking the Peyton Place draftees away drives off, the camera crew is briefly reflected on the two last windows of the bus.