The WARREN'S STANDARD newsletter of the S.D.Warren Co., special edition of November, 1974, featured an entire 12 page issue-length story of the mill's railroads, both narrow and standard gauge. It is well illustrated and researched. Anyone interested in the subject should look for a copy. They are on slick paper and the reproduction is first rate.
Two follow up articles appeared in the January and February, 1975 editions of the same publication. These contained corrections and additional information to the original article.
I have photos taken by the late Hugh Boutell in 1939 of the engines at work in the mill yard. They were part of a collection he left to my friend Charles Purinton. Those negatives now are at the Walker Transportation Collection, Beverly Historical Society.
Richard Symmes