(Stationery) Ink Advertising Covers. Balance of 34 ad covers mostly illustrated, 1860-90's; various products and companies including Thomas Inks - Chicago, Ill. showing Black Cat design, E.S. Miller R.P.O. Clerks Best Inking Pads - Newark, O., etc.; some flaws, Very Fine overall. Estimate  $400 - 600. $0 (Image)