A Red File for Callan: An Inner Sanctum Mystery [alt. title: A Magnum for Schneider]

New York: Simon and Schuster, 1969. Very Good/Very Good. New York: Simon and Schuster, 1969. First American Edition. Octavo; publisher's simulated cloth in white pictorial dust jacket; 173pp. Light edge wear to jacket and cloth extremities, boards bowing a bit at fore-edge, brief tape residue to jacket verso, textblock margins a bit foxed, else a Very Good, bright copy overall.

The author's first mystery to feature Callan, "the most efficient killer in Europe." First published in the U.K. under the title A Magnum for Schneider.