Born-Digital or AnalogAnalogTranscriptPostal service. Colorado. La Plata county Postal history. Western Express v.29 #1 Ja 1979 p.19-26 Part 2 of postal history; map. Western Express v.29 #2 Ap 1979 p.17-25CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Postal service. Colorado. La Plata county, [496596]. Denver Public Library Digital Collections, accessed 12/05/2025, https://digital.denverlibrary.org/nodes/view/1577450
