La Colle Falls - "intake floor"
La Colle Falls - "Intake: first concrete"
La Colle Falls - "Intake: first concrete"
La Colle Falls - "intake excavation and forms"
La Colle Falls - "framework n. wall of lock"
La Colle Falls - "first breach in upstream coffer dam"
La Colle Falls - "erecting first crest and apron forms"
La Colle Falls - "entrance to lock"
La Colle Falls - dam construction building
La Colle Falls - dam construction
La Colle Falls - "crack in north wall of lock"
La Colle Falls - construction camp
La Colle Falls - construction
La Colle Falls - "coffer dam removed"
La Colle Falls - "closure openings"
