1870 Bridgeport Conn., two invoices steam & gas industrial supplies

Two nice invoices and receipts of payment, letterhead of  Belknap & Burnham, Water Street Bridgeport Connecticut.

Two receipts for Mr. F. Robbins, one on July 11^th 1870 and the second September 3^rd 1870.

Folds and creases. #2 has corner crease, and toning on right side from glue remnant on back.

#1: 4 ½’ x 8 ½”

#2: 7” x 8 ⅜”