Photograph of the YH-40 #3 in its first flight over the Hurst plant, side view.

Photograph of the first flight of XH-40 #3 over the Hurst plant with stabilizer on the top rotor.

Photograph of first flight of the XH-40 #3 over the Hurst plant with the stabilizer on the top rotor.

Photograph of the first flight of the U.S. Army XH-40 #3 over the Hurst plant with a rear point of view.

Photograph of the XH-40 #3 hovering over the Hurst Heliport with six barrels in a cargo sling.

Photograph of Bell XH-40 number 3 in its first flight over the Hurst plant with a stabilizer on the top rotor.

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.

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.

Photograph of the XH-40 #3 hovering over the Hurst Heliport with six barrels in a cargo sling.

Photograph of the XH-40 #3 in flight over the Hurst plant with stabilizer on top rotor.

Photograph of the first flight of XH-40 #3 over the Hurst plant with a stabilizer on the top rotor.

Photograph of the XH-40 #3 with cargo of six barrels in tow being carried by a sling.

Photograph of Bell Helicopter employees working on the YH-40 on the assembly line.

Photograph of Close-up of the main rotor blade of the XH-40 being worked on 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.

Photograph of the first flight of XH-40 #3 over the Hurst plant with stabilizer on top rotor.

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.

Photograph of the XH-40 #3 hovering over the Hurst Heliport with six barrels in a cargo sling.

Photograph of a Bell employee working on the main rotor blade 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.

Photograph of four mechanical parts for a UH-1B Iroquois helicopter. They are arranged in a row in front of a solid backdrop.

Photographs of the Bell Helicopter 429 model, held by UNT Special Collections as part of the Bell Helicopter Records. The model is dark red in color with a white slash and the number 429 in white on its side. Aviation pioneer Lawrence Dale Bell founded the Bell Aircraft Corporation in Buffalo, NY in 1935. When the helicopter division began to thrive, in 1951, the division established a new headquarters in Hurst, TX. The corporation was purchased by Textron in 1960 and established Bell Helicopter as a separate corporation.

Photograph of the Bell XH-40 #3 flying at the Hurst heliport with six barrels in a cargo sling.

Photograph of the first flight of the XH-40 #3 over the Hurst plant with the stabilizer on the top rotor.

Photograph of the XH-40 #3 hovering over the Hurst Heliport with six barrels in a cargo sling.

Photograph of flight one of the XH-40 #3 from the US Army over the Hurst plant.