Aug 162015
This looks like an interesting book:Goodyear GA-28A/B Convoy Fighter: The Naval VTOL Turboprop Tailsitter Project of 1950 by Jared Zichek.
It’s available in both paperback and epub from Amazon.
The same author also produced the excellent Secret Aerospace Projects of the U.S. Navy: The Incredible Attack Aircraft of the USS United States, 1948-1949