Items

Items

• 

  [E1536BJ], Letter from Betts and Betts Corp, Harry A Yerkes to Thomas Alva Edison, October 25th, 1915

  1915-10-25
• 

  [E1565JN], Letter from Harry A Yerkes to Thomas Alva Edison, June 18th, 1915

  1915-06-18
• 

  [E1565QJ], Letter from Harry A Yerkes, Betts and Betts Corp to Thomas Alva Edison, December 9th, 1915

  1915-12-09