Andrew Wyeth , Letter to Martha Burchfield Richter, Pg. 1, April 8, 1968; ink on paper, 10 1/2 x 7 1/4 inches; Charles E. Burchfield Archives, Purchased with funds from the Vogt Family Foundation in honor of Dr. Edna M. Lindemann, 2004
Andrew Wyeth, Letter to Martha Burchfield Richter, Pg. 2, April 8, 1968; ink on paper, 10 1/2 x 7 1/4 inches; Charles E. Burchfield Archives, Purchased with funds from the Vogt Family Foundation in honor of Dr. Edna M. Lindemann, 2004
Andrew Wyeth , Letter to Martha Burchfield Richter, Pg. 3, April 8, 1968; ink on paper, 10 1/2 x 7 1/4 inches; Charles E. Burchfield Archives, Purchased with funds from the Vogt Family Foundation in honor of Dr. Edna M. Lindemann, 2004
Andrew Wyeth , Letter to Martha Burchfield Richter, Pg. 4, April 8, 1968; ink on paper, 10 1/2 x 7 1/4 inches; Charles E. Burchfield Archives, Purchased with funds from the Vogt Family Foundation in honor of Dr. Edna M. Lindemann, 2004
Catherine B. Parker (1926-2012), Whirling Wind, undated; ink on paper, 13 1/2 x 16 1/2 inches (sight); Burchfield Penney Art Center Archives, Gift of Harriet and Mortimer Spiller, 2005
Charles E. Burchfield (1893-1967), Idea Book, Vol. 1, 1915-1916; hard cover commercially made composition book, 8 1/8 x 8 ½ inches; Charles E. Burchfield Foundation Archives, Gift of the Charles E. Burchfield Foundation, 2006
Charles E. Burchfield (1893-1967), Idea Book, Vol. 2, 1915-1916; hard cover commercially made composition book, 8 1/4 x 6 3/4 inches; Charles E. Burchfield Foundation Archives, Gift of the Charles E. Burchfield Foundation, 2006
Charles E. Burchfield (1893-1967), Sketch Book, ca. 1916-1919; Commercially made composition book, 6 3/4 x 4 inches; Charles E. Burchfield Foundation Archives, Gift of the Charles E. Burchfield Foundation, 2006
Charles E. Burchfield (1893-1967), Sketch Book, ca. 1913; hard cover commercially made composition book, 8 1/4 x 6 3/4 inches; Charles E. Burchfield Foundation Archives, Gift of the Charles E. Burchfield Foundation, 2006