Born-Digital or AnalogAnalogTranscriptPhotographers. Porter, J. H. Rooms on Alpine Street, Georgetown; has large supply of stereoscopic views of Colorado for sale. Georgetown Colorado Miner May 18, 1871 p.4 c.1CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
Photographers. Porter, J. H, [485559]. Denver Public Library Digital Collections, accessed 08/12/2025, https://digital.denverlibrary.org/nodes/view/1409248
