[Fort Bridger, U.T. Straight Line] bold "March 1 1858" dated two line postmark tying 3c dull red (#26) to fresh cover from Genl. Fitz Porter to his wife in New York City, signed by Stanley Ashbrook in 1949 who correctly notes, "A very RARE Cover in superb Condition," one of two known of this marking and the only one with an adhesive, a highlight of the collection

(MWE Figure 7-13) ex Baughman, Risvold and Walske (Image)