Items
Items
recipient is exactly
Heyden Chemical Works
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[E1518CCD], Letter from Thomas Alva Edison to Heyden Chemical Works, March 15th, 1915
1915-03-15 -
[E1518DFX], Letter from Thomas Alva Edison to Heyden Chemical Works, April 27th, 1915
1915-04-27 -
[E1518ECI], Letter from Thomas Alva Edison to Heyden Chemical Works, May 20th, 1915
1915-05-20 -
[E1616IBL], Letter from Thomas Alva Edison to Heyden Chemical Works, September 27th, 1916
1916-09-27 -
[LB110460], Letter from Thomas Alva Edison to Heyden Chemical Works, February 26th, 1916
1916-02-26 -
[LB112443], Letter from Thomas Alva Edison to Heyden Chemical Works, June 5th, 1916
1916-06-05 -
[LB112487], Letter from Thomas Alva Edison to Heyden Chemical Works, June 9th, 1916
1916-06-09