Operation Endless Hour, by Dan J. Marlowe (Coronet, 1975).From
Operation Fireball, by Dan J. Marlowe (Coronet, 1974).A gift.
Operation Overkill, by Dan J. Marlowe (Coronet, 1973).A gift.
Operation Checkmate, by Dan J. Marlowe (Coronet, 1973).A gift.
Operation Stranglehold, by Dan J. Marlowe (Coronet, 1974).A gift.
Operation Hammerlock, by Dan J. Marlowe (Coronet, 1975).A gift.