1938
Inc. Harold E. Edgerton, 1973
Inc. Harold E. Edgerton, 1964
Inc. Harold E. Edgerton, 1955
Inc. Harold E. Edgerton, 1963
Inc. Harold E. Edgerton, 1965
Inc. Harold E. Edgerton, 1957
Inc. Harold E. Edgerton, 1960