[Interior, detail of meters.]
[Interior with machinery.]
[Interior, radiator manufacturing shop.]
[Machine room.]
[Interior, boiler room.]
[Interior, possibly a basement, with unidentified equipment.]
[Interior, detail of air ducts.]
29th Street pier. S.S. Mobile City ship, Isthmian Line. Sump pump pipes
[Factory building, machinery on roof.]
[Industrial machinery.]
Machinery in shoe factory
[Interior, view of air ducts.]
[Brick wall cut-away with embedded drainage pipe.]
[Interior of unidentified building, possibly a factory.]
Manhattan College. Interior, boiler room