Items

• [D0710AAK], Letter from Henry Wilson Spangler, Engineers Club of Philadelphia to Thomas Alva Edison, September 27th, 1907
  1907-09-27
• [D9706AAB], Letter from Engineers Club of Philadelphia, Joseph Thomas Richards to Thomas Alva Edison, November 27th, 1897
  1897-11-27
• [E1619AF], Letter from Engineers Club of Philadelphia, Lewis H Kenney to Thomas Alva Edison, March 21st, 1916
  1916-03-21
• [E1918BD], Letter from Engineers Club of Philadelphia, Joseph Allison Steinmetz to Thomas Alva Edison, October 9th, 1919
  1919-10-09