Scope and Contents This accession is the culmination of JoAnne Steppe Hunter's research efforts to shed light on the significant role her father, John Frederick Steppe, played during World War II as Project Engineer for the P51 Mustang aircraft. JoAnne traveled the U.S. and reached out to a variety of people to compile documentation of Steppe's accomplishments. The majority of the collection consists of photocopies of articles from Aviation Week and ...