- Author: John B. Stanbury, Gordon L. Brownell, Douglas S. Riggs, Hector Perinetti, Juan Itoiz, Enrique B. Del Castillo
- Language: English
- Year: 1954
- Author: Robert T. Monroe
- Language: English
- Year: 1951
- Author: William Thomas Salter
- Language: English
- Year: 1940
- Author: Stanley Cobb
- Language: English
- Year: 1943