Subject - 740
#6:641-859
#740
Spencer Heath Archive Item 740 Note by Spencer MacCallum from conversation with Heath (verbatim possibly…
Subject - 1242 - The Road To Bankruptcy
#9:1191-1335
#1242
Spencer Heath Archive Item 1242 Penned notes for a letter to an editor on lined,…
Subject - 1816
#12:1711-1879
#1816
Spencer Heath Archive Item 1816 Note pasted into Thomas Nixon Carver, Principles of Political Economy,…
Correspondence - 2410
#15:2181-2410
#2410
Spencer Heath Archive Item 2410 Exchange between Heath, July 12, 1955, and Leo Wolman, c/o…
Conversation - 3150 - On The Patent System
#19:3031-3184
#3150
Spencer Heath Archive Item 3150 Typed transcript and commentary by Spencer MacCallum from conversation with…