Theodore was educated in public schools and Houlton Academy. In 1860, he established the Aroostook Times, the first newspaper printed in Houlton, and operated the paper for forty years.
U.S., Civil War Draft Registrations Records, 1863-1865
Name: Henry W Haskell
Birth Year: abt 1837
Place of Birth: Massachusetts
Age on 1 July 1863: 26
Race: White
Marital Status: Married
Residence: Cranston, Rhode Island
Congressional District: 2nd
Class: 1