| Issue | #66 |
| Published | August 1942 |
| Cover Price | 0.10 |
| Pages | 68 |
| Editing | Whitney Ellsworth; [Murray Boltinoff; Mort Weisinger] |
| Characters | Batman; Robin. |
| Genre | superhero |
| Pencils | Jerry Robinson |
| Inks | Jerry Robinson; George Roussos (also backgrounds) |
| Letters | typeset |
| Reprinted | In The Batman Archives (DC, 1990 series) #2 (1991); in Batman: Featuring Two-Face and the Riddler (DC, 1995 series) #nn; In 100-Page Super Spectacular (DC, 1973 series) #DC-20. |
| Synopsis | "Lou Gehrig - A Quiet Hero" by Frank Graham is reviewed. |
| Genre | review |
| Script | Josette Frank (signed) |
| Letters | typeset |
| Characters | Batman [Bruce Wayne]; Robin [Dick Grayson]; Gilda (I); Dr. Ekhart; Two-Face [Harvey Kent](villain; I; origin); Boss Moroni (villain). |
| Synopsis | At a criminal trial, D.A. Harvey Kent is disfigured by acid thrown into his face, and the shock drives him to become a master criminal who bases all of his crimes on the number two, and who uses a two-headed silver dollar to decide if he will keep the loot from a crime or not. |
| Genre | superhero |
| Script | Bill Finger (from an idea by Bob Kane) |
| Pencils | Bob Kane (signed) |
| Inks | Jerry Robinson; George Roussos |
| Letters | Ira Schnapp |
| Notes | Story continues in Detective Comics #68. Some info and synopsis added by Craig Delich 3-22-09. |
| Reprinted | In The Batman Archives (DC, 1990 series) #2 (1991); in 100-Page Super Spectacular (DC, 1973 series) #DC-20 (September 1973); in Batman: Featuring Two-Face and the Riddler (DC, 1995 series) #nn. |
| Characters | Boy Commandos [Rip Carter; Brooklyn; Alfy; Pierre; Jan]; The Sphinx [villain]; Casey 39; Von Bruhte; Radcliffe. |
| Synopsis | In the year 3045 A.D., scholars unearth an ancient battlefield and try to reconstruct what happened there. |
| Genre | war; adventure |
| Script | Jack Kirby |
| Pencils | Jack Kirby |
| Inks | Joe Simon |
| Letters | Howard Ferguson? |
| Notes | Letterer credit added by Craig Delich 3-22-09. |
| Reprinted | In Boy Commandos (DC, 1973 series) #1. |
| Characters | Jerry |
| Genre | gag |
| Script | Henry Boltinoff (signed) |
| Pencils | Henry Boltinoff (signed) |
| Inks | Henry Boltinoff (signed) |
| Letters | Henry Boltinoff |
| Genre | gag |
| Characters | The Crimson Avenger [Lee Travis]; Wing; Joe Henderson; Byers; Maretti. |
| Genre | superhero |
| Script | Jack Lehti (signed) |
| Pencils | Jack Lehti (signed) |
| Inks | Charles Paris |
| Letters | Charles Paris |
| Characters | Bart Regan |
| Genre | adventure |
| Pencils | Louis Cazeneuve |
| Inks | Louis Cazeneuve |
| Genre | adventure |
| Script | Eric Carter (signed) |
| Letters | typeset |
| Characters | Air Wave [Larry Jordan]; D. A. Cole [D]; Static; Inspector Morton; Grump [villain]. |
| Synopsis | D.A. Cole dies, and Larry Jordan is arrested for his murder. |
| Genre | superhero |
| Script | Murray Boltinoff? |
| Pencils | Harris Levy (signed as Lee Harris) |
| Inks | Charles Paris |
| Reprinted | In DC 100-Page Super Spectacular (DC, 1971 Series) #DC-7; in Superman (DC, 1939 series) #245 (December 1971-January 1972). |
| Genre | sports |
| Script | ? (signed as Arcky) |
| Pencils | ? ()signed as Arcky) |
| Inks | ? (signed as Arcky) |
| Genre | fact |
| Script | Jack Liebowitz |
| Letters | typeset |
| Notes | published by Detective Comics, Inc. 480 Lexington Ave New York, N.Y. Editor: W. F. Ellsworth Owners: Harry Donenfeld; P. H. Sampliner. |
| Characters | Slam Bradley; Shorty Morgan. |
| Genre | detective |
| Pencils | Howard Sherman |
| Inks | Howard Sherman |
| Letters | Howard Sherman |