| American Scenery Co. Backlist for "Colorado Views, No. 8" n.d. Stereocard, back Jefferson Stereoptics 29 December 2020, Auction #20-2, Lot: 421 LL/107240 (Ron Walters, 14 March 2022) This backlist style appears on American Scenery Co. cards which would mean pirated series by several different photographers.
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