Conversation - 853
#6:641-859
#853
Spencer Heath Archive Item 853 Random taping by Spencer MacCallum from conversation with Heath December…
Correspondence - 1670
#11:1500-1710
#1670
Spencer Heath Archive Item 1670 Carbon of a letter from Heath to E. Merrill Root….
Correspondence - 2990
#18:2845-3030
#2990
Spencer Heath Archive Item 2990 Copy of letter from Heath at Science of Society Foundation,…