Documents
Submission 6307d4727c880
Random taping by Spencer MacCallum from conversation with Heath
Something New In Evolution
Taping by Spencer MacCallum on the occasion of his asking Heath to review George Gaylord Simpson's The Meaning; of Evolution. Elkridge, Maryland
The Impersonal Christian Ethic
Taping by Spencer MacCallum during conversation with Heath
Submission 6307d050b0c69
Taping by Spencer MacCallum on the occasion of his asking Heath to dictate a review of Hilaire Belloc's The Restoration of Property.
Relativity
Taping by Spencer MacCallum on the occasion of his asking Heath to dictate a review of the book, A Debate on the Theory of Relativity, Open Court Publishing Company, Chicago, 1927, Introduction by William Lowe Bryan.
Submission 6307cf2821a82
Ideas for the dedication to occupy an extra blank page in the printing of booklet "Society and Its Services" — verbatim notes by Spencer MacCallum in a lunch room with Heath in Baltimore.