Items

• [CJ615ABO], Letter from Walter Seeley Mallory to Pennsylvania Steel Co, Edgar Conway Felton, May 4th, 1907
  1907-05-04
• [D9820AAC], Letter from Thomas Alva Edison to Pennsylvania Steel Co, Harry Huse Campbell, January 20th, 1898
  1898-01-20
• [LB048473], Letter from Alfred Ord Tate to Pennsylvania Steel Co, Jessie Benton Fremont, April 13th, 1891
  1891-04-13
• [LB048493], Letter from Thomas Alva Edison to Pennsylvania Steel Co, Edgar Conway Felton, April 14th, 1891
  1891-04-14
• [LB050004], Letter from Arthur Edwin Kennelly to Pennsylvania Steel Co, Edgar Conway Felton, June 16th, 1891
  1891-06-16
• [LB050052], Letter from Thomas Alva Edison to Pennsylvania Steel Co, Edgar Conway Felton, June 17th, 1891
  1891-06-17
• [LB050246], Letter from Alfred Ord Tate to Edgar Conway Felton, Pennsylvania Steel Co, July 6th, 1891
  1891-07-06
• [LB059663], Letter from Thomas Alva Edison to Harry Huse Campbell, Pennsylvania Steel Co, January 20th, 1898
  1898-01-20
• [LM114281], Letter from Arthur Edwin Kennelly to Pennsylvania Steel Co, April 11th, 1891
  1891-04-11
• [LM214905], Letter from Thomas Alva Edison to Pennsylvania Steel Co, Harry Huse Campbell, January 18th, 1898
  1898-01-18
• [LM235009], Letter from Walter Seeley Mallory to Pennsylvania Steel Co, Harry Huse Campbell, December 22nd, 1897
  1897-12-22