Manuscripts
Edwin Powell Hubble and seven unidentified men in an office at the U.S. Army Ballistic Laboratory, at Aberdeen Proving Ground
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Edwin Powell Hubble and Lt. Mario Cantie watching a test in the supersonic wind tunnel at the U.S. Army Ballistic Laboratory, Aberdeen Proving Ground
Manuscripts
Press photograph, Edwin Powell Hubble and Lt. Mario Cantie witnessing a test in the supersonic wind tunnel at the U.S. Army Ballistic Laboratory, Aberdeen Proving Ground. Hubble is on the right, with a pipe in his mouth.
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Edwin Powell Hubble, Henry Stimson, General Harris, Colonel Eddy, R.W. Kent and 5 other unidentified men viewing the supersonic wind tunnel at the U.S. Army Ballistic Research Laboratory
Manuscripts
Edwin Powell Hubble, Henry Stimson, General Harris, Colonel Eddy, R.W. Kent and five (5) other unidentified men witnessing a test at the supersonic wind tunnel in the Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH, Henry Stimson, --at right, Gen. Harris, Col. Eddy, R.W. Kent. APG [Aberdeen Proving Grounds] --Supersonic Wind Tunnel. Huntington Library." Hubble is standing at the far left, with his back to the camera.
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Edwin Powell Hubble and Henry Stimson at the wind tunnel at the Ballistic Research Laboratory
Manuscripts
Edwin Powell Hubble and Henry Stimson at the wind tunnel at the U.S. Army Ballistic Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH in the wind tunnel at the Aberdeen Proving Ground with Henry Stimson [?]." Hubble is on the far left, holding up a pencil in his hand. Hubble and Stimson are standing in front of a plan on an easel.
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Diagram of the Flexible nozzle supersonic wind tunnel for the U.S. Army Ballistic Research Laboratory
Manuscripts
Diagram of proposed flexible nozzle supersonic wind tunnel for the U.S. Army Ballistic Research Laboratory, Aberdeen, Md. Note in the hand of Grace Burke Hubble: "EPH Huntington Library Collection". The image's label reads: "Flexible nozzle supersonic wind tunnel, Ballistics Research Laboratory, Aberdeen Proving Ground, MD." In the lower left-hand corner is a label that reads: "Prepared by Pictorial Branch, The Ordnance School, A.P.G., MD." Below this label is written "A28464".
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Edwin Powell Hubble and two unidentified men outside a building at the U.S. Army Ballistic Research Laboratory
Manuscripts
Edwin Powell Hubble and 2 unidentified men outside a building at the U.S. Ballistic Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH at the B.R.L.". Hubble is in the center.
mssHUB 1043 (2)

Equipment, machinery, and men working with the supersonic wind tunnel, U.S. Army Ballistic Laboratory
Manuscripts
Equipment, machinery, and unidentified men working with the supersonic wind tunnel in the U.S. Army Ballistic Llaboratory. Note in the hand of Grace Burke Hubble on verso: "EPH Supersonic Wind Tunnel, Huntington Library Collection."
mssHUB 1044 (2)