Keywords: sdasm aviation aeronautics san diego air and space museum sandiegoairandspacemuseum ryan lindbergh blackandwhite monochrome text document writing outdoor black and white Flight certificate stating that Mary Sherrett has flown over San Diego, photo copy. Photo from the "Early Days" of Ryan Aeronautical Repository: San Diego Air and Space Museum Archive Flight certificate stating that Mary Sherrett has flown over San Diego, photo copy. Photo from the "Early Days" of Ryan Aeronautical Repository: San Diego Air and Space Museum Archive |