Charles E. Burchfield (1893-1967), "The Sweet pea in the foreground backed by the vine on the post," from the folder “521, Tentative Plans for Enlarging Some 1917 Sketches”, circa 1954-55; conté crayon on paper; Burchfield Penney Art Center, Charles E. Burchfield Foundation Archives, Gift of the Charles E. Burchfield Foundation, 2006