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[XH-40 engine showing cannon connections]

Description: Photograph of the XH-40 engine showing cannon connections from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957

[Close-up of a part of the XH-40]

Description: Photograph of a close-up of a part from the XH-40 from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957

[Main rotor of the XH-40]

Description: Photograph of the main rotor of the XH-40 from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957

[Close up of the XH-40 cannon plugs]

Description: Photograph of a close-up of cannon plugs in the XH-40 from a series of photos of the XH-40 co-op advertising, cannon plugs, heli coil screw lock insert, main rotor blade 114" brass extrusion, American Brass, aluminum main rotor grip, Joy Manufacturing Company fan, engine showing cannon connections.
Date: November 8, 1957