["The Old Man in the Woods," 1955, oil painting by Lyonel Feininger]

[Watercolor by Lyonel Feininger, 1954]

[Grotesque, 1921, watercolor by Lyonel Feininger]

Untitled (chimp pretending to fly fake airplane)

Untitled (Chinook helicopter lifting 105mm howitzer silhouetted against sun and low clouds, Vietnam)

[Crayon drawing by Lyonel Feininger, 1909]

Untitled (soldiers in combat gear in jungle of central highlands near Dak To, Vietnam)

[Drawing by Lyonel Feininger, 1909]

[Pen drawing by Lyonel Feininger, 1923]

["Street in Arcueil," 1915, watercolor by Lyonel Feininger]

[Pen drawing by Lyonel Feininger, 1934]

Untitled (soldier carrying cargo boxes on shoulders, Vietnam)

[Watercolor by Lyonel Feininger, 1892]