Rhode Island Tercentenary Issue First Day Cover
300th Anniversary of the Settlement of Rhode Island
Issued on May 4, 1936 in Providence, RI - Scott #777

Unofficial Town Cancel - Potter Hill, RI
John Kilton Cachet - Planty #777-61d

The Potter Hill Post Office, (Westerly Township, Washington County) was established on June 5, 1848 under Postmaster Oliver Babcock. The Post Office was disestablished on February 28, 1954 and mail is handled through the Westerly Post Office.

Sources:
Check List of Rhode Island Post Offices 1790-1994 - Del Beaudreau
Rhode Island Postal History: The Post Offices - Merolla, Jackson & Crowther