Browse Items (2 total)
- Creator is exactly "Glenn L. Martin Company"
[First flight air mail cover addressed to William E. Boeing from Glenn L. Martin Company, July 3, 1942]
![[First flight air mail cover addressed to William E. Boeing from Glenn L. Martin Company, July 3, 1942]](https://digitalcollections.museumofflight.org/files/square_thumbnails/2f875a1e3dcc3347719a0c7c61de4681.jpg "[First flight air mail cover addressed to William E. Boeing from Glenn L. Martin Company, July 3, 1942]")
First flight air mail cover addressed to William E. Boeing, Seattle, Washington, from the Glenn L. Martin Company, Baltimore, Maryland, July 3, 1942.Stamped cachet: "First Flight - This cover carried on first official flight of the 'Mars,' built by…
[Commemorative letter and air mail cover honoring 25th anniversary of Glenn L. Martin's flight from Newport Bay, California to Avalon, Catalina Island, May 10, 1937]
![[Commemorative letter and air mail cover honoring 25th anniversary of Glenn L. Martin's flight from Newport Bay, California to Avalon, Catalina Island, May 10, 1937]](https://digitalcollections.museumofflight.org/files/square_thumbnails/f3fa0b9967ad105bc8322d9226ba9b4d.jpg "[Commemorative letter and air mail cover honoring 25th anniversary of Glenn L. Martin's flight from Newport Bay, California to Avalon, Catalina Island, May 10, 1937]")
Commemorative letter honoring the 25th anniversary of Glenn L. Martin's record-making flight from Newport Bay, California to Avalon, Catalina Island, then the longest over-water flight in aviation history, May 10, 1937. One typed page on Glenn L.…