Keywords: blackandwhite monochrome sketch drawing text black and white U.S. National Archives Record Group 156: Records of the Office of the Chief of Ordnance, 1797 - 1988 Tank and Automotive Plans, 1934 - 1961, Folder 7 National Archives Identifier: 789126 Original blueprint was blue - this is a scan of a black and white copy made in 2008, prior to the availability of digital scanning at the College Park site. U.S. National Archives Record Group 156: Records of the Office of the Chief of Ordnance, 1797 - 1988 Tank and Automotive Plans, 1934 - 1961, Folder 7 National Archives Identifier: 789126 Original blueprint was blue - this is a scan of a black and white copy made in 2008, prior to the availability of digital scanning at the College Park site. |