Detective Comics (1937-) #89

The theft of a secret typewriter, valueless except to the inventor, leads Batman and Robin to discover the true identity of the Cavalier.

Written By:
Henry Boltinoff, Don Cameron, Jack Farr, Tex Palmer
Pencils:
George Roussos, Henry Boltinoff, Martin Naydel, Jack Farr, Dick Sprang, John Daly, Louis Cazeneuve
Inks:
George Roussos, Henry Boltinoff, Martin Naydel, Jack Farr, Dick Sprang, John Daly, Louis Cazeneuve
Cover By:
Dick Sprang