The book I just bought last Saturday at a used bookstore (The Art of Sylvia Plath, edited by Charles Newman (1970)) includes reproductions of several drawings by Plath (as well as a selection of her poetry, most of which was uncollected at the time). And then today, across my feed reader comes a link to a slideshow of Plath drawings being shown at a gallery in London.
This one's cute:
Looking at some of the drawings suggests that the process of re-creating objects on paper can help a poet "see" them in a way that's different from the sensory, and therefore (ideally) interesting but not wholly foreign. In other words, the process of drawing can inform the process of writing and constitute study for both. (Not that many of us have time for that.)
Here's one from my book:
Rock Harbour, Cape Cod (detail)
I don't have sufficiently comprehensive knowledge of Plath's body of work to connect this drawing to any particular poem (nor does my book attempt to do so). Some of the other drawings in the slideshow are quite thought-provoking if you stop to study them.