Insulated canister used to keep food warm in airline meal service. The canister, which contains eight plastic bowls, was used by Northwest Airlines, c.1950s.

Northwest Airlines employee uniform made by F. Veskrno Hamilton, Cincinnati, OH, c.1965.

Northwest Airlines employee hat made by F. Veskrno Hamilton in Cincinnati, OH, c.1965.

Northwest Airlines silver anniversary medallion, 1951.

Northwest pilots on strike, 1978.

Northwest Orient Airlines hangar and offices at the Minneapolis-St. Paul International Airport, c.1960. Photographed by Marty Nordstrom Photography.

Santa Claus arrives via Northwest Airlines for a stay at L.S. Donaldson Company during the Christmas season, 1930.

Aerial view of Northwest Airlines and McInnis Aviation Service hangars, Wold-Chamberlain Field, undated.

Inauguration ceremonies for Northwest Airlines' first flight over the "Great Circle" to the Orient, 1947.

Passengers with oxygen masks on Northwest Airlines plane, c.1940.