Building a Building
Plot: Mickey's a shovel operator and laborer at a construction site; Minnie is delivering box lunches; Pete is the foreman. Mickey pays more attention to Minnie than to his work, and keeps having accidents (mostly involving the blueprints Pete is holding)

Billy Bletcher
Walt Disney
Marcellite Garner
David Hand
Joseph M. Schenck
Frank Churchill
Ben Sharpsteen
Clyde Geronimi
Dick Lundy
Les Clark