Manuscripts
The explosion from a 4,000 pound bomb, Aberdeen Proving Ground, Maryland
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Military airplane and missile, Aberdeen Proving Ground, Maryland
Manuscripts
Plane and missile, not long after missile was released. Stamped with perforations "confidential." Note in the hand of Grace Burke Hubble: "EPH Huntington Library"
mssHUB 1044 (20)

Measuring instruments at the U.S. Ballistic Laboratory, Aberdeen Proving Ground
Manuscripts
Machinery, Ballistics Research Laboratory. Photographer: Photographic Measurements Section, U.S. Army Ballistic Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH, Huntington Library Collection." Possible measuring instruments, in three compartments, labeled Pitch, Lift, Drag.
mssHUB 1044 (9)

Eight-inch blassistic shell 150 feet beyond muzzle, U.S. Army Ballistic Laboratory
Manuscripts
Eight inch shell about 150 feet beyond muzzle, just after being fired, Ballistics Research Laboratory. Note in the hand of Edwin Powell Hubble: "8-inch shell about 150 ft beyond muzzle, velocity about 2300 ft/sec. Microflash exp. @ 1/1,000,000 second." Note in the hand of Grace (Burke) Hubble: "EPH Huntington Library"
mssHUB 1044 (18)

Aerial view of Spesutie Island, Maryland
Manuscripts
Aerial view of Spesutie Island, and the grounds used by Edwin Powell Hubble for ballistics experiments and testing. Note in the hand of Grace Burke Hubble: "From the air, Spesutie Island, and the bridge over the Narrows, World War II, experiment ground used by EPH (Also penciled drawings on back) under snow. Huntington Library. Haunted House [Hubbles' residence on Spesutie Island] at bridge's end as it touches the island."
mssHUB 1044 (26)

Series of photographs showing a missile being released from an airplane
Manuscripts
Montage of multiple photographs, showing missile being released from a plane. Note in the hand of Grace (Burke) Hubble: "EPH Huntington Library"
mssHUB 1044 (16)

A rocket launched from wooden scaffolding, near a tree-lined field
Manuscripts
A just launched rocket above the launching scaffolding and a man crouching by the detonator. Note in the hand of Grace (Burke) Hubble: "EPH outfit, firing rockets APG. Huntington Library"
mssHUB 1044 (23)