When Perry is trying to reconnect the phone call to his wife on New Year's Eve, he asks the operator to connect him to the city of Salinas, and gives the number "Axminster7-7181". In 1932 there were only 3,482 telephone customers in Salinas and the phone numbers were four digits, with no exchanges.
The address on the returned package that Perry picks up at the mailbox is 917 Loma Dr., Salinas, California. While there currently is a Loma Drive in Salinas, that street did not exist in 1932, and the house numbers range from 202 to 254.
The red biplane at the airport in episode one is a Boeing Model 75 Stearman, first introduced 3 years after this episode takes place.