- Author: Gertrude Prokosch Kurath
- Language: English
- Year: 1968
- Author: Lancaster John E.
- Language: English
- Year: 1966
- Author: James W. VanStone
- Language: English
- Year: 1965
- Author: Philip K. Bock
- Language: English
- Year: 1966
- Author: June Helm Nancy Oestreich Lurie Gertrude Prokosch Kurath
- Language: English
- Year: 1966
- Author: June Helm Nancy Oestreich Lurie Gertrude Prokosch Kurath
- Language: English
- Year: 1966
- Author: Royal Canadian Air Force
- Language: English
- Year: 1960
- Author: Royal Canadian Air Force
- Language: English
- Year: 1967