Trimble, William F. High Frontier: A History of Aeronautics in Pennsylvania . Pittsburgh: University of Pittsburgh Press, 1982.
Citation Type: Book
Referenced in:
Helen Richey [Great Depression]
Trimble, William F. High Frontier: A History of Aeronautics in Pennsylvania . Pittsburgh: University of Pittsburgh Press, 1982.
Citation Type: Book
Referenced in:
Helen Richey [Great Depression]