This was Osa Massen's final credited role.
There is a Danish community in California. Solvang, outside of Santa Barbara, was founded by Danish immigrants in 1911.
While in the car outside the smorgasbord restaurant, Perry sends Della in to order "Æbleskiver", a Danish snack that is round and fried. Æbleskiver literally means "apple slices" or "apple pancakes" in Danish.
Both Dennis Patrick and Morgan Woodward had roles on Dallas (1978). Patrick played Vaughn Leland and Woodward played Punk Anderson.
Four of the guest stars - Malcolm Atterbury, Edward Norris, Dennis Patrick and Francis De Sales - were born in Philadelphia.