Thrilling forum

Cockeyed Cavaliers (1934) as Tavern customer
Comedy set in medieval England where two thiefs are rescued by a young woman and they will have furthermore singing and comical situations at the local inn and at the baron's castle, but all end well He is seen on the right of the picture
Possible Id by Nick too, so i will put it as an uncertain one

International squadron (1941) as Air raid warden
Seen for half a minute in this early second world war RAF flight movie with a young Ronald Reagan
The copy i found was not a very good quality print and also the night scenes were very dark but it's him on the right

A Fever in the blood (1961) as Courtroom spectator
Political movie with also a murder case enlivened by a cast with big names

Bedknobs and Broomsticks (1971) as Passerby in Portobello Road

Klondike Annie (1936) as Port official
You can only see him in a glimp in this sea adventure movie with Mae West in the title role

Tundra (1936) as White man from Noonak
About the struggle of a crashed flying doctor against the dangers of the Alaskan wilderness

Hangman's house (1928) as British soldier
Silent movie from John Ford with again Frank as an extra

The virgin queen (1955) as a Physician
Barely seen for around a minute, mostly from behind, but this is the best shot of him in this lavish production with Bette Davis as the queen

Lash of the whip (1924) credited as Frank Blake
Earliest role found for Frank in this silent western movie, set in modern times where he has one of the title roles (he had some in the silent era) as the railroad man This silent movie only lasts 45 minutes and was full of fight and action scenes

Gunsmoke (1962) (Tv series) (S8-ep3) "Quint Asper comes home" as Townsman