Letter from Ward Wheelock to Wilder Penfield, 8 Oct. 1954.

Subject : This I believe (Radio program).

Letter from Raymond Swing to Wilder Graves Penfield, April 8, 1954.

Subject : This I believe (Radio program).

This I Believe, draft of radio broadcast talk.

Subject : This I believe (Radio program).

This I Believe, draft of radio broadcast talk.

Subject : This I believe (Radio program).

Letter from Wilder Penfield to Raymond Swing, 13 May 1954.

Subject : This I believe (Radio program).

Invitation to Wilder Penfield to appear on radio program "This I Believe."

Subject : This I believe (Radio program).

This I Believe...Doctor Escaped Death When Torpedoed Because His Work Had Only Just Begun, reprint.

Subject : This I believe (Radio program).