Born-Digital or AnalogAnalogTranscriptPostal service. South Dakota Daily mail from Cheyenne, Wyoming to Black Hills to start April 1, 1877. See Index Cheyenne daily leader Mail route established to Red Cloud Agency (1674). See Index Cheyenne D.L. p.20 Black Hills Stage Line to carry mail to Deadwood, 1876. Ibid p.21 Envelopes being printed for Tony Express from Fort Laramie to Black Hills, 1876. Ibid p.22 Carried mail in 1874 from Sioux City to the Black Hills. Ibid p.21CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Postal service. South Dakota, [497458]. Denver Public Library Digital Collections, accessed 12/04/2026, https://digital.denverlibrary.org/nodes/view/1578411
