Items

• [D0735AAB], Letter from John Oxenbridge Heald to Thomas Alva Edison, May 7th, 1907
  1907-05-07
• [D0735AAJ], Letter from John Oxenbridge Heald to Thomas Alva Edison, November 2nd, 1907
  1907-11-02
• [D9143ABI], Letter from John Oxenbridge Heald to Thomas Alva Edison, October 15th, 1891
  1891-10-15