Manuscripts
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
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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.
mssHUB 1043 (3)

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.
mssHUB 1043 (8)

Supersonic wind tunnel and equipment at the U.S. Army Ballistic Laboratory
Manuscripts
Four unidentified men working with the supersonic wind tunnel, Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH Supersonic Wind Tunnel, Huntington Library Collection."
mssHUB 1044 (1)

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)

Machinery, equipment, and men working with the supersonic wind tunel, U.S. Army Ballistic Laboratory
Manuscripts
Machinery and equipment , and men working with the supersonic wind tunnel, U.S. Ballistic Laboratory. Photographer: Photographic Measurements Section, Ballistic Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH, Huntington Library Collection."
mssHUB 1044 (7)

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)