Items
recipient is exactly
MacKay, A D
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[E1160DF], Letter from Thomas Alva Edison to A D MacKay, December 4th, 1911
1911-12-04 -
[E1257BB1], Letter from Thomas Alva Edison to A D MacKay, June 12th, 1912
1912-06-12 -
[E1616AAK], Letter from West Orange Laboratory to A D MacKay, January 5th, 1916
1916-01-05 -
[LB109285], Letter from William Henry Meadowcroft to A D MacKay, January 5th, 1916
1916-01-05 -
[LB109517], Letter from William Henry Meadowcroft to A D MacKay, January 15th, 1916
1916-01-15 -
[LB109569], Letter from William Henry Meadowcroft to A D MacKay, January 20th, 1916
1916-01-20