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 - Wallum Lake, RI
1st John B. Kilton Cachet - Planty 777-61m

The Wallum Lake Post Office, (Burrillville Township, Providence County) was established on May 12, 1906 under Postmaster George F. Whitford. The Post Office was disestablished on January 2, 1976 and mail is handled at the Pascoag Post Office.

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