Items

• [CJ620ADO], Letter from Walter Seeley Mallory to Frank Lewis Dyer, September 14th, 1911
  1911-09-14
• [PT032AGZ1], Letter from Herman E Kiefer to Walter Seeley Mallory, June 15th, 1909
  1909-06-15
• [PT032AGZ6], Letter from Herman E Kiefer to Walter Seeley Mallory, December 9th, 1909
  1909-12-09
• [QQ001AAL], Letter from Lehigh Portland Cement Co, Charles Arthur Matcham to Thomas Alva Edison, April 28th, 1904
  1904-04-28
• [QQ0030001], Legal Pleading, North American Portland Cement Co, Thomas Alva Edison, Alsen's American Portland Cement Works, March 2nd, 1908
  1908-03-02