Keywords: SON-1 1939 NAN9-57.jpg The first of 54 Curtiss SOC-3 Seagull observation planes BuNo 1147 built by the U S Navy Naval Aircraft Factory under the designation SON-1 in 1939 U S Navy Naval Aviation News September 1957 http //www history navy mil/nan/backissues/1950s/1957/Sep57 pdf 1939 USN PD-USGov-Military-Navy Curtiss SOC Seagull 1939 in aviation |