Letter from Anne Spaulding to Robert Duncan, April 11, 1981, SUNYAB Poetry/Rare Books Collection.
Letter from Eleanor Duncan to Robert Duncan, April 16, 1981, SUNYAB Poetry/Rare Books Collection.
Accounts of Robert Duncan's birth come from Ekbert Faas, Young Robert Duncan, p.290; unpublished notes of Minnehaha Symmes, SUNYAB; and a phone conversation with Mrs.
Unpublished notes of Minnehaha Symmes, SUNYAB. Minnehaha Harris Symmes kept a chronology of important events for the Harris and Symmes families, SUNYAB.