Born: February 27, 1827, Mansfield, Connecticut.
Died: September 16, 1910, at the home of his son, minister James Hovey Spencer, in North Adams, Massachusetts.
Buried: Cedar Grove Cemetery, Fair Haven, Vermont.
Dwight was the son of Christopher N. Spencer and Sally Slate, and husband of Martha Elizabeth Hovey.
In 1851, he moved to Brooklyn, New York. He was a bookkeeper and Sunday School worker until ordination in 1863.
During the American civil war, Spencer was a delegate for the United States Christian Commission. After the war, he did evangelistic work, and in 1869, became a pastor at Fair Haven, Vermont.
In 1880 Spencer became superintendent of missions for the Rocky Mountain District of the American Baptist Home Mission Society. His territory included Utah, Idaho, Montana, and Wyoming. During 10 years in this position, he started 30 churches and 33 Sunday schools, and built 25 meeting houses.
After his tenure in the West, Spencer became secretary for the Wabash District of the Baptist Home Missionary Society for southern Illinois and Indiana, and later for the New York District. He held that post until resigning in 1901.
If you know where to get a good photo of Spencer (head & shoulders, at least 200×300 pixels),