Born-Digital or AnalogAnalogTranscriptC978 Scotts Bluff National Monument 'A'526br Mattes, Merrill E 1949 Scotts Bluff: Gibraltar of the Plains. (In The Westerners. Denver Posse Brand paging book. 1945- ) 25-38CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Scotts Bluff National Monument, [550234]. Denver Public Library Digital Collections, accessed 13/12/2025, https://digital.denverlibrary.org/nodes/view/1779149
