Folded letter datelined Feby 26th, 1850 and postmarked Providence, addressed to Rev. Nathan W. Williams in Shrewsbury, Mass., carried in the U.S. mails with red “PAID” and “5” rate markings; the letter notes, “I took the bundle to Ross’ Express Office to be forwarded to you...” and includes the notation “Paid, chg. Box 57,” confirming prepaid service via Ross’ Express.