Excavation and Bracing
Hill Road Surface Drain
Highland Park Reservoir
Haights and Stanton
Boat House on Carnegie Lake
Discharging Scraper
Highland Reservoir No. 2
Bears at the Zoo
Cleaning the Bottom
Highland Park Zoo
Heberton Street and Wall
Bear Pit
Cleaning Bottom
Highland Reservoir No. 2
Children's Zoo
Flamingo at the Zoo
Haights and Avondale
Concrete Lining
King House
Highland Reservoir No. 1
Highland Park
Lake Carnegie
Cleaning at Highland Reservoir
Cleaning Operations
Highland Park
Children on a Zoo Trip
Allegheny River
Deer and Buffalo Paddock at the Highland Park Zoo