| Unidentified photographer Matson's Photograph Gallery [Photographic studio of frontier photographer Olin Matson in Kimball (S.D.)] 1890s (ca) Photograph South Dakota State Historical Society Helen Halverson (Christiansen) Collection, Accession no: H2018-004 LL/120776 (Alan Griffiths, 17 June 2018) I'm indebted to Matthew Reitzel, Archivist, South Dakota Historical Society, for bringing this photograph to my attention.
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