PIERRE, S.D. (AP) — The South Dakota State Historical Society's archive has added more than 600 photographs related to railroad history to the South Dakota Digital Archives.

The historical society says the photographs are from the R.C. Lathrop Collection.

State Archivist Chelle Somsen says the photographs offer an "exceptional view" of railroad history in South Dakota.

The collection emphasizes railroad depots and features images dating between the 1900s and the 1970s.

Lathrop began as a railroad worker when he was 18 years old and eventually retired in 2004 after more than 40 years. He donated his collection of photographs and other materials to the state archives in 2011.

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