(Lake Superior Line - Routes 12509 & 12717) Northern Light, Lake Superior Line, Cleveland O., fine strike of oval and "Steam Boat" straightline handstamps on red, white and blue 1776 Flag patriotic cover to Boston, Mass, bearing 3¢ dull red (26) tied by "Cleveland O. Jul 1, 1861" duplex, endorsed "For Master Joseph Bigelow"; some top edge faults, Fine, an attractive and very unusual use on a patriotic envelope. Milgram No. 1015  Estimate $1,000 - 1,500. Illustrated in Milgram on page 530. $0 (Image)