Erastus W. Everson, was a clerk from Dedham, MA, when he enlisted on April 16, 1861, as a sergeant, and was mustered into Co. A, 3rd Massachusetts Infantry. He re-enlisted, and was mustered into Co. H, 18th Massachusetts Infantry. He was was promoted to 2nd lieutenant, on August 1, 1862; wounded on August 30, 1862, at the 2nd battle of Bull Run; wounded a second time, on December 13, 1862, at the battle of Fredericksburg; promoted to 1st lieutenant on February 25, 1863; commissioned into the Veteran Reserve Corps, December 11, 1863; and discharged on January 1, 1868. He then served in the Freedmen's Bureau, and was later a journalist.

Springfield Republican (Springfield, Mass.), Wednesday, January 6, 1897, p. 3
Maj. Erastus W. Everson Dead. His Services in the Late War and in Public Positions.
Maj. Erastus W. Everson of Green Harbor died suddenly yesterday from heart trouble. He was a man well known all around the country. He was 60 years old and was born in Hanson. Early in his life he worked in the registry of deeds office at Dedham. He was one of the first to go to the war, being first sergeant of Co. A, 3d Massachusetts Regiment. He afterwards enlisted in the 18th Massachusetts regiment and became first lieutenant. He was first lieutenant and adjutant of the Veteran reserve corps, commissioned by President Lincoln, and also brevet-captain and major of United States veterans. After the war he was in the government revenue service and engaged actively against moonshiners in South Carolina and the Ku-Klux Klan. He was captured and had a narrow escape from being shot.
Maj. Everson was at one time librarian of Columbia college, South Carolina, did newspaper work and edited a paper. He was made colonel and aide-de-camp of the state national guard on the staff of the governor of South Carolina for three years and later went to New York on the editorial staff of the New York Graphic. He went to Green Harbor 12 years ago and lived alone in a house on land formerly owned by Daniel Webster. He was prominent in town affairs. His wife died several years ago.