Detective Comics (1937-) #87

Bruce and Dick disguise themselves as umbrella repairmen in order to get the Penguin to surface, but when he does, he has a surprise in store for the Dynamic Duo. He then buys an umbrella shop and does his own repairs, placing radio devices into umbrellas in order to direct his men on jobs. NOTE: Not all backup stories advertised on the cover are be included.

Written By:
Joe Greene, Jack Farr, Joe Samachson
Pencils:
Jerry Robinson, George Roussos, Martin Naydel, Jack Farr, Dick Sprang, John Daly, Louis Cazeneuve
Inks:
Jerry Robinson, George Roussos, Martin Naydel, Jack Farr, Dick Sprang, John Daly, Louis Cazeneuve
Cover By:
Dick Sprang