He left Tufts after his junior year, becoming general manager of the Waterville and Fairfield Railway and Electric Company.
[1] They started out in a building, formerly owned by Oakland Electric Light Company, on Messalonskee Stream.
[2] With his wife, Massachusetts native Alice Mabel Bartlett, he had two known children: William (1902–1962) and Dorothy (1905–1993).
His son built Wyman Power Station, on Cousins Island in Yarmouth, Maine, in 1959, three years before his own death.
[4] In 1949, he was the subject of William Bertram Skelton's book Walter S. Wyman: One of Maine's Great Pioneers.