[First flight air mail cover addressed to Bill Boeing, Jr., Seattle, Washington, June 21, 1947]

First flight air mail cover addressed to Bill Boeing, Jr., Seattle, Washington, June 21, 1947.

Stamped cachet: "First Flight A.M. 3 from Bozeman, Montana - Northwest Orient Airlines."

Stamped cachet: "U.S. Air Mail, First Flight, Bozeman, Mont."

Stamped on verso: "Bozeman, Montana. The Gallatin Way to Yellowstone National Park."