[Interior with machinery.]
[Interior, radiator manufacturing shop.]
[Interior, detail of air ducts.]
[Machine room.]
[Interior, boiler room.]
[Equipment detail, New York World's Fair.]
50th Street and 11th Avenue. Horn and Hardart Bakery, pressure meter, cast iron type.
[Interior, view of air ducts.]
[Interior of unidentified building, possibly a factory.]
[Interior, possibly a basement, with unidentified equipment.]
29th Street pier. S.S. Mobile City ship, Isthmian Line. Sump pump pipes
Meter Service Corporation. Electric meters, covered
533 West 57th Street. Pavelle Laboratories. Interior, photo lab. Construction view
Manhattan College. Interior, boiler room
Meter Service Corporation. Electric meters, uncovered
[Heating control valve on 17th floor of unidentified building.]
Centre Street and Pearl Street. U.S. Federal Courthouse. Interior, detail of roof showing lead installations