| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Piasecki H-21 Helicopter: An Illustrated History of the H-21 Helicopter and Its Designer, Frank N. Piasecki | 978-1-4251-37O7-6 (1-4251-37O7-5) | 2007 | Robert J. Brandt |
J.D. · J. Davies · W.J. · W. J. Davies · William D. · William Davies · William Idris James Davies · William J. · William James Frank Davies