Browse Items (1 total)
- Source is exactly "The William E. Boeing Sr. Papers (2005-10-06-B), Box 4, Folder 13"
[Air mail cover addressed to Bill Boeing, Jr., Pasadena, California, from William E. Boeing, May 18, 1938]
![[Air mail cover addressed to Bill Boeing, Jr., Pasadena, California, from William E. Boeing, May 18, 1938]](https://digitalcollections.museumofflight.org/files/square_thumbnails/6ef39a04e7ce3860047f9e68bdde077c.jpg "[Air mail cover addressed to Bill Boeing, Jr., Pasadena, California, from William E. Boeing, May 18, 1938]")
Air mail cover addressed to Bill Boeing, Jr., Pasadena, California, from William E. Boeing, May 18, 1938.Stamped cachet: "Seattle National Air Mail Week, May 15-May 21."