Alan Gregg, pseud. of Gertrude E. Mallette.
The Mystery of Flight 24.
R587637. The Mystery of Flight 24. By Alan Gregg, pseud. of Gertrude E. Mallette. © 18Sep47; A15978. Gertrude E. Mallette (A); 11Oct74; R587637.
Gertrude E. Mallette|A