Quote:
I just found a cover with a postmark with Brattleboro from 1883. That doesn't match with Fortes book.
I looked in the Postal Bulletin to see if they reported the two name changes between 1880 and 1888 and found the following in the Postal Bulletin for September 13, 1888 (Issue 2601)

The Postal Guides between1885 and 1888 each show the spelling as Brattleborough, and it is finally reported as Brattleboro in the 1889 edition.
I also found an entry in the July 8, 1886 issue of the Postal Bulletin which identified the name as Battleboro in a notice about a mail route change.
This was a Presidential class post office after 1849, so the Post Office Department would typically provide the devices. Perhaps they knew of the pending change and issued the device with the future name as an economy measure.
Mike
Edited for grammar.