Photograph of a diagram of an A-4 long-range rocket, with legend

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  A rocket launched from wooden scaffolding over a tree-lines field

  Manuscripts

  A just launched rocket beyond the launching scaffolding and a man crouching by the detonator. Note in the hand of Grace (Burke) Hubble: "EPH outfit, firing rocket APG. Huntington Library"

  mssHUB 1044 (24)

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  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)

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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".

  mssHUB 1044 (17)

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  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)

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  Series of photographs showing a missile shooting upwards

  Manuscripts

  Series of multiple photographs, showing motion of missile shooting up, Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH Ballistics Research. Huntington Library Collection".

  mssHUB 1044 (15)

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  Shadow photograph of air shock waves off a 37 mm shell, at the U.S. Army Ballistic Laboratory

  Manuscripts

  Shadow photograph of test results, showing air stream off 37 mm shell, Ballistics Research Laboratory. Note in the hand of Edwin Powell Hubble: "Shadow photo by spark (exp. @ 1/1,000,000 second), 37 mm shell velocity about 2500ft/sec. Note shock waves in air skin friction along sides turbulence in wake." Note in the hand of Grace (Burke) Hubble: "EPH Huntington Library."

  mssHUB 1044 (19)