Opening Hours
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Manuscripts
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108

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)

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)

Manuscripts
Equipment and machinery in the 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 (5)

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".
mssHUB 1044 (17)

Manuscripts
Machinery, or measuring instruments, inside a room at the U.S. Army Ballistic Laboratory. Photographer: Photographic Measurements Section, Ballistic Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH, Huntington Library Collection."
mssHUB 1044 (8)

Manuscripts
Equipment and wires in a room at the U.S. Army Ballistic Laboratory. Photographer: Photographic Measurements Section, Ballistic Research Laboratory Note in the hand of Grace Burke Hubble: "EPH, Huntington Library Collection."
mssHUB 1044 (4)