La Colle Falls - "operations on north shore"
La Colle Falls - lock
La Colle Falls - channel
La Colle Falls - workmen on river
La Colle Falls - workmen on river
La Colle Falls
La Colle Falls - "Intake: first concrete"
La Colle Falls - "Intake: first concrete"
La Colle Falls - "lock breast wall"
La Colle Falls - "showing several stages of apron construction"
La Colle Falls - lock walls
La Colle Falls
La Colle Falls
La Colle Falls - "looking upstream"
La Colle Falls
