How many movies have George O'Brien and Sol Lesser collaborated on?

They have worked on 7 movies together! Their first movie together was Robbers' Roost (1932) while their highest rated movie together was When a Man's a Man (1935). They have not worked together since The Border Patrolman (1936). They are most known for their western films together.

Role
Constable O'Malley aka Duke Kinnard
Crew
Producer