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Building 41, Air Compressor Installation, Yard Labor

Building 41, Air Compressor Installation, Yard Labor

Monthly Progress Photo, Air Compressor Installation, Looking Southwest, Yard Labor

Monthly Progress Photo, Air Compressor Installation, Looking Southwest, Yard Labor

Monthly Progress Photo, Building 41, Air Compressor Installation, Looking North, Yard Labor

Monthly Progress Photo, Building 41, Air Compressor Installation, Looking East, Yard Labor

Monthly Progress Photo, Building 41, Air Compressor Installation, Looking North, Yard Labor

Building 41, Installation of Boilers from Building 123, Looking West, The Babcock and Wilcox Company, Contractors

Building 41, Installation of Boilers from Building 123, The Babcock and Wilcox Company, Contractors

Monthly Progress Photo, Building 41, Boiler Installation, Looking West, The Babcock and Wilcox Company, Contractors

Monthly Progress Photo, Building 41, Boiler Installation, Looking Southeast, The Babcock and Wilcox Company, Contractors

Monthly Progress Photo, Building 41, Boiler Installation, Looking West, The Babcock and Wilcox Company, Contractors

Monthly Progress Photo, Building 41, Air Compressor Installation, Looking Southeast, Yard Labor

Monthly Progress Photo, Building 41, Turbine Installation, Looking Southwest, The Snare and Trieste Company, Contractors

Monthly Progress Photo, Building 41, Electric Turbine Installation, Looking East, The Westinghouse Mack Company, Contractors

Monthly Progress Photo, Building 41, Boiler Installation, Looking North, The Babcock and Wilcox Company, Contractors

Monthly Progress Photo, Building 41, Air Compressor Installation, Looking East, Yard Labor

Monthly Progress Photo, Building 41, Boiler Installation, Looking East, The Babcock and Wilcox Company, Contractors

Building 41, Air Compressor Installation Monthly Progress Photo, Looking East, Yard Labor

Boiler Installation Monthly Progress Photo, Looking Northwest, The Babcock and Wilcox Company, Contractor

Building 41, Air Compressor Installation Monthly Progress Photo, Looking East, Yard Labor

Building 41, Air Compressor Installation Monthly Progress Photo, Looking West, Yard Labor

Boiler Installation Monthly Progress Photo, Looking Southeast The Babcock and Wilcox Company, Contractor

Installation of Air Compressor at Building 41, Looking East, Monthly Progress Photo, Yard Labor

Installation of Turbine Electrical Generator at Building 41, Looking Northwest, Monthly Progress Photo, The Western Machine Company, Contractor

Installation of Air Compressor at Building 41, Looking West, Monthly Progress Photo, Yard Labor

Monthly Progress Photo, Gantry Crane East of Launching Ways, Installation of Wire Cable to Protect Trolley Wires, Yard Labor

Alien Property Custodian - Property Seized - Installation Dept., Chicago Branch, Bosch Magneto Co

Airplanes - Inspection - Motors thorougly tested before installation. Every motor installed in a plane is throroughly tested by experts. International Film Service

Airplanes - Engines - Aircraft Testing Field, Packard Motor Co., Detroit, Michigan. Installation of jacks in testing sheds

Airplanes - Engines - Aircraft Testing Field, Packard Motor Co., Detroit, Michigan. Installation of a testing jack

Airplanes - Radio Equipment - Equipment for seaplanes built at Naval Aircraft Factory, Phila., PA. F-5-L radio installation boat 3567 looking forward. After pilot's cockpit

Airplanes - Radio Equipment - Airplanes and parts manufactured for government use. F 5-L Antenna reel, installation for wireless. After pilot's cockpit. At Naval Aircraft Factory, Philadelphia, PA. U.S. Navy Department

Airplanes - Manufacturing Plants - Thomas-Morse Aircraft Corporation Factory, Ithaca, New York. Installation of Thomas 135 H.P. aerometer in Thomas D-5 Type U.S. training machine

Airplanes - Types - Building aeroplanes for the government. Front view, Martin twin-motored 800 H.P. Bomber, showing power plant installation and interplane wing structure. Plant of The Glenn L. Martin Co., Cleveland, Ohio. Duplicate of the bomber which on Jan. 17th, 1919, flew from McCook Field, Dayton, Ohio - 215 - in 1 hour and 15 minutes averaging 172 miles an hour. From The Glenn L. Martin Co

Airplanes - Radio Equipment - Equipment for seaplanes built at Naval Aircraft Factory, Phila., PA. F-5-L radio installation showing rear view of transmitter

Chemical Warfare Service - Plants - Edgewood Arsenal - Manufacturing gases at Edgewood Arsenal, Maryland. First installation of reactors

Installation of Blower Ventilating System in Building Number 29 Foundry

Men Checking a Protector Installation

Photograph of the Abraham Lincoln Statue Installation in the Lincoln Memorial, Washington, D.C.

Photograph of a Mechanical Installation of Fire Extinguisher in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of the Installation of the Window Screen in the Constitution Avenue Entrance of the National Archives Building

Photograph of a Mechanical Installation of Fire Alarm in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation of Sound Test Gauge in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation of Patrol Station in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of Installation of the Roof of the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of the Right Side of the Rotunda Wall before the Installation of the Faulkner Mural, National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation of Elevator Fan in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of Installation of the Gates to the Rotunda of the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building

Photograph of a Mechanical Installation in the National Archives Building