| Issue | #627 |
| Published | March 1991 |
| Cover Price | 2.95 USD |
| Pages | 84 |
| Editing | Denny O'Neil; Kelley Puckett (assistant) |
| Notes | Mistakenly labeled 600th appearance of Batman anniversary issue. Actually 601st appearance in Detective Comics. |
| Characters | Batman |
| Genre | superhero |
| Pencils | Norm Breyfogle (painted) |
| Inks | Norm Breyfogle (painted) |
| Colors | Norm Breyfogle (painted) |
| Notes | Mistakenly labeled 600th appearance of Batman anniversary issue. Actually 601st appearance in Detective Comics. |
| Letters | Typeset |
| Characters | Batman; GS: Commissioner Gordon |
| Genre | superhero |
| Script | Bill Finger |
| Pencils | Bob Kane |
| Inks | Bob Kane |
| Reprinted | From Detective Comics #27. |
| Characters | Batman; Robin; GS: Commissioner Gordon |
| Genre | superhero |
| Script | Mike Friedrich |
| Pencils | Bob Brown |
| Inks | Joe Giella |
| Notes | Redone version of "Case of the Chemical Syndicate" from Detective Comics #27. Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. The title of this story is how the story is listed in the editorial records. The title was changed when the story was originally published. |
| Reprinted | From Detective Comics (DC, 1937 series) #387 [under new title] |
| Characters | Batman; GV: Pesticide (I & D) |
| Genre | superhero |
| Script | Marv Wolfman |
| Pencils | Jim Aparo |
| Inks | Mike DeCarlo |
| Colors | Adrienne Roy |
| Letters | John Costanza |
| Notes | Redone version of "Case of the Chemical Syndicate" from Detective Comics #27 |
| Characters | Batman; GS: Commissioner Gordon |
| Genre | superhero |
| Script | Alan Grant |
| Pencils | Norm Breyfogle |
| Inks | Steve Mitchell |
| Colors | Adrienne Roy |
| Letters | Todd Klein |
| Notes | Redone version of "Case of the Chemical Syndicate" from Detective Comics #27 |