October 23, 1930 | ink on paper
January 27, 1932 | ink on paper
June 8, 1935 | ink on paper
May 24, 1937 | ink on paper
January 20, 1928 | ink on paper
April 2, 1929 | ink on paper
early 20th Century | lead, copper, ink residue
January 30, 1928 | ink on paper
late 19th century - early 20th century | gelatin silver process
late 19th century - early 20th century | ink on paper
August 15, 1939 | ink on paper
October 1, 1935 | ink on paper
December 30, 1927 | ink on paper
November 25, 1930 | ink on paper
July 27, 1932 | ink on paper
December 8, 1934 | ink on paper