Items

Items

• 

  [E1616BAM], Letter from Thomas Alva Edison to Pittsburgh Plate Glass Co, Halbert Kellogg Hitchcock, February 4th, 1916

  1916-02-04
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  [E1910AY], Letter from William Henry Meadowcroft to Halbert Kellogg Hitchcock, Pittsburgh Plate Glass Co, May 15th, 1919

  1919-05-15
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  [E1930BI], Letter from Thomas Alva Edison, William Henry Meadowcroft to Pittsburgh Plate Glass Co, Halbert Kellogg Hitchcock, November 13th, 1919

  1919-11-13
• 

  [E1930BL], Telegram from Thomas Alva Edison to Halbert Kellogg Hitchcock, Pittsburgh Plate Glass Co, November 17th, 1919

  1919-11-17
• 

  [MF14BI], Letter from William Henry Meadowcroft to Pittsburgh Plate Glass Co, Halbert Kellogg Hitchcock, April 16th, 1917

  1917-04-16