Route agent postmark handstamp
"BOST.& WIL'MET. AGT." is a Route Agent postmarker. It was used on the mail car between Boston, Massachusetts, and Willimantic, Connecticut. This route was eighty-six miles and operated over the New York and New England Railroad. Prior to 1874, the route was the Boston & Southbridge Agent. On January 15, 1879, the route became the Boston & Waterbury Agent.
Although the postmarker has an 'e,' a letter which 'Willimantic' lacks, this is the only closely-named route. Errors in postmarker orders are known to have occurred and an 'e' and 'a' in manuscript may have appeared similar since the requisition was written in long-hand. The device was made at the Chambers shop in Lodge, Virginia, between 1874 and 1878. It was more likely produced closer to 1874, when the route was established.
Kay, John L. Directory of Route Agent Routes. Mobile Post Office Society, 1990.