Ajax [Ajax Cloth Sponging Co.] Boilers

[Interior, boiler room.]

Furnace and boiler room

Furnace and boiler room

White Cross Dairy, steam boiler.

Woolworth Building, boiler room behind east boilers.

Manhattan College. Interior, boiler room

894 Broadway. Hewlitt-Robin and Co., steam boiler feather and hat dyers.

East Side Laundry, steam boiler and spherical iron for mending shirtwaists.

Woolworth Building, Boiler Plant [Construction zone.]

Queensboro Boulevard. Queensboro Hall, boiler room.

[Interior, boiler room.]

7th Avenue and 37th Street. Fitzgibbons Boilers in excavation.

Woolworth Building, boiler room looking N.W.

[Interior, boiler room.]

Sixth Avenue. Boilers

[Interior, boiler room.]

[Interior, boiler room.]

Envelope factory, glue pot and steam boiler.

224 West 35th Street. Fitzgibbon Boilers.