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 - Pontiac, RI
1st John B. Kilton Cachet - Planty 777-61a

The Pontiac Post Office, (Warwick Township, Kent County) was established on April 19, 1870 under Postmaster Stephen N. Bourne. The Post Office was disestablished on June 30, 1949. Mail is handled through the Warwick Post Office.

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