single tied by "Jordan's Penny Post, Saint Louis Sep 24" company datestamp to 1860 blue lined letterset to Tell City, Indiana, US 1851 3c Dull red (26) tied by "Saint Louis Mo. Sep 25 1860" datestamp, extremely fine, one of just a small handful of recorded covers with Squier's Rose brown adhesive and by far the finer of the two that bear additional US postage, a spectacular and important cover, 2022 Philatelic Foundation certificate (Scott $11,500)Squier & Co. began operations in early July 1859, when their first newspaper advertisements started to appear in the St. Louis Missouri Republican. The firm was superseded by Jordan & Company Penny Post Package Express, who continued to accept Squier's stamps. The latest known covers date from the fall of 1860.Provenance: C. Corwith Wagner (John A. Fox, 1957)"D.K." Collection (R.A. Siegel Sale 862, 2003)