1 image. Oswald Ryan (senior member of Civil Aeronautics Board), 6 May 1952. Arrival from Washington D.C.; Supplementary material reads: "Oswald Ryan, senior member of the Civil Aeronautics Board, is shown here as he arrived in Los Angeles from Washington D.C. last night (Sunday). He will join the C.A.B. inquiry into the crash of a non-scheduled North Continent Airlines plane which killed 29 persons in the Puente hills last April. This is one of a few times a C.A.B. member has personally taken part in such an investigation. (Ryan can be reached at the Del Mar Club, Santa Monica)".