Forwarded by A. Roberts &
Co.'s Eastern Letter Express. Double-line oval handstamp and ms.
"Paid 4" on Sep. 7, 1844 folded letter from Boston to Portsmouth
N.H., prepaid at the advertised 4c rate, Very Fine, extremely scarce New
England express marking (Image) 
Walker & Jackson's Portsmouth
Express, Office, No. 8 Court St., Boston. Clearly struck red oval
handstamp on folded cover from Portsmouth to Boston, pencil Nov. 22, 1844
date inside, Very Fine, extremely scarce marking from this small New
England express, operated by Gideon Walker and C. C. Jackson between Boston
and Portsmouth with offices at Hampton and Newburyport
(Image)