Weekly Campaign Circular, Ychwanegu i'r clipfwrdd X6. Ffeil July-Dec. 1947. Rhan oNational Savings Movement (Wales) Records,
Weekly Campaign Circular, Ychwanegu i'r clipfwrdd X7. Ffeil Jan.-Sept. 1948. Rhan oNational Savings Movement (Wales) Records,
News Letter, Ychwanegu i'r clipfwrdd X8-14. Cyfres 1960-1975. Rhan oNational Savings Movement (Wales) Records,
News Letter, Ychwanegu i'r clipfwrdd X8. Ffeil Jan. 1960-Jan. 1965. Rhan oNational Savings Movement (Wales) Records,
News Letter, Ychwanegu i'r clipfwrdd X9. Ffeil Jan. 1960-Jan. 1965. Rhan oNational Savings Movement (Wales) Records,