Born-Digital or AnalogAnalogTranscriptBerthoud pass Results of early survey. RMH Oct.JL12, 1861 p.2 c.2-3 Case survey. RMN July 24, 1862 p.3 c.2 Edward Louis Berthoud outlines findings of survey of read from Denver to Salt Lake. RMN (act. 12, 1861 p.2 Q.2-3 Francis Mills Case reports on Berthoud Pass survey. Described by H.M. Vaile in 1861 as hew went over and thru Middle Park. Report of Commissioner of Indian Affairs. 1862 p.233CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
