For some, the inspiration goes beyond pies and pancakes. In this early August letter from 1969 to Hyde Cox, the artist Andrew Wyeth included a watercolor study as a token of thanks:
Betsy just came in with this rusty pail full of blue berries--these she picked in the fields of Broad Cove Farm--I had to make this study for you. All of this is done to try and tell you in my own language of how deeply I feel about your gift of the Selected Letters of Robert Frost.Hyde Cox was a friend of Robert Frost's and a friend and patron of Wyeth. His papers contain a folder of Wyeth's sketches and several folders of their correspondence. A few other letters contain sketches, but none quite so spectacular as the pail of blueberries.
To see the collection, ask for MS-1168. The blueberry study is in box 1, folder 39.