There are two copies. One is a copy print.
Title (generic)
Print, Photographic
"Lower Pacific Mills. Worthington Boiler Feed Pump: Size 20" x 12" x 15", Length (overall) 14' x 3". Supplier 23 Bigelow Manning Vertical Boiler: Weight 16,000 lbs. good for 200 lbs. pressure.
Collection
Schwarz Photographic Print Collection
Date (coverage)
1900-08-25