Denver. Postal service Unclaimed letters advertised. RJ! News. Nov. 13, 1865 p.1 c.5 Unclaimed letters advertised. R.M News. Nov. 20, 1865 p.1 c.4 Unclaimed letters advertised. R.14 News. Nov. 37, 1.855 p.1 c d Unclaimed letters advertised, Deriv=r. R,F News. Dec. 4, 1865 p.1 d.5 Unclairnpd. letters PAvertised, list. R.":" News. Dec. 11, 1865 p.1 c.4