This Remarkable Photograph Was Taken at 40 Feet Charming Lady1 Page Vertical Questar advertisement, Audubon, March-April 1958. Questar CorporationAudubon, March-April 1958, 53.Remarkable Photograph1 Page Vertical Questar advertisement, Nature, May 1958. Questar Corporation via archive.orgNature, May 1958, 225.