[Preliminary sketch for the murals at the Post Office Department Building in Washington, D.C.]

[Preliminary sketch for the murals at the Post Office Department Building in Washington, D.C.]

[Preliminary sketch for the murals at the Post Office Department Building in Washington, D.C.]

[Preliminary sketch for the murals at the Post Office Department Building in Washington, D.C.]

[Preliminary sketch for the murals at the Post Office Department Building in Washington, D.C.]

[Preliminary sketch for the murals at the Post Office Department Building in Washington, D.C.]

[Preliminary drawings for murals in the Post Office Building in Washington, D.C.]

[Locomotive.]

[Preliminary drawings for murals in the Post Office Building in Washington, D.C.]

[Preliminary drawings for murals in the Post Office Building in Washington, D.C.]

[Train.]

[Train.]

[Train.]

[Train.]

[Sketch for the Rotunda of the United States Custom House, Broadway and Bowling Green.]

[Sketch for the Rotunda of the United States Custom House, Broadway and Bowling Green.]

[Steam locomotive.]

[Vessels.]

[U.S. Mail vessel.]

[U.S. Mail vessel.]