Items

• [E1334AP], Letter from Miller Reese Hutchison to Zachariah Power Halpin, May 12th, 1913
  1913-05-12
• [E1365GC], Letter from Miller Reese Hutchison to Zachariah Power Halpin, Thomas Alva Edison, October 14th, 1913
  1913-10-14
• [E1664AAW], Letter from John Pierrepont Constable to Zachariah Power Halpin, January 18th, 1916
  1916-01-18
• [E1664ADF], Letter from Absalom Mason Kennedy to Zachariah Power Halpin, March 4th, 1916
  1916-03-04
• [E1664AGE4], Letter from William Henry Meadowcroft to Zachariah Power Halpin, June 19th, 1916
  1916-06-19