small group of 16 covers and cards including "Boston, Hart. & Erie R.R.", "Hart. & Millerton Agt" (with both "W" and "E" killers), "Hartford & M. Agt.", "Hart & Saybrook R.P.O.", "Hartford & State Line R.P.O.", "P.H. & Fishkill R.R.", and "Spring. & Hartford R.P.O.", some light duplication, generally fine to very fine, an interesting group