C-34 with belly flaps, Space and Aviation museum SDASM

From the Mort Brown Special Collection..Mort Brown was a chief test pilot for Cessna from 1937-1972. He was responsible for most of Cessna's production flight tests. He personally flew the first hour(s) on over 14,000 airplanes. ..Repository: San Diego Air and Space Museum Archive ( http://www.sandiegoairandspace.org/library/stillimages.html )