Conversation - 29 - The Glory Of Natural Science
#1:1-116
#29
Spencer Heath Archives Item 29 Verbatim notes by Spencer MacCallum from conversation with Heath. No…
Subject - 1870
#12:1711-1879
#1870
Spencer Heath Archive Item 1870 Pencil jottings inserted in the index, perhaps as a bookmark,…
Subject - 1883
#13:1880-2036
#1883
Spencer Heath Archive Item 1883 Pencil notes on a card inserted at page 47 of…