Inscription on envelope: "Lawrence Brown's Gage Tractor with 80 hp gyro revolving motor."Creation Datecirca 1912SubjectBrown, Lawrence W.Extent1 photograph : print, black and white ; 6 x 4 in + 1 envelopeLanguageEnglishOriginal Formatphotographic printsenvelopesBibliographic CitationThe Ralph A. Newcomb Early California Aviation Photograph Collection/The Museum of FlightRightsNo copyright - United States