[Interior, boiler room.]

[Interior, boiler room.]

[Interior, boiler room.]

Manhattan College. Interior, boiler room

Furnace and boiler room

Furnace and boiler room

[Interior, boiler room.]

[Interior, boiler room showing fire damage.]

[Interior with machinery.]

153 Madison Avenue. Redlich & Company, silversmiths. Interior, boiler room

[Machine room.]

[Interior, detail of meters.]

116 West 32nd Street. Milliner. Interior, boiler room

[Interior, possibly a basement, with unidentified equipment.]

Interior, manufacturing shop with boiler, oven and bags

[Interior, radiator manufacturing shop.]

["Gulf Queen", boiler room looking to starboard.]

["Gulf Queen", boiler room looking to port at oil pumps.]

[Interior, view of air ducts.]

Ajax [Ajax Cloth Sponging Co.] Boilers