Wiki information Mesenkop:

Louis Mesenkop
Audio engineer, Deceased Person, Award Winner, Award Nominee, Person

Louis Mesenkop was an American sound engineer. He won two Academy Awards for Best Special Effects and was nominated for another in the same category.

Douglas Spencer
Actor, Influence Node, Film actor, Person, TV Actor, Deceased Person

Douglas Spencer was an American film actor. Starting in the mid-1930s and going through the '40s, he appeared in dozens of films as an extra, then cameo roles and uncredited roles.