| Issue | #188 |
| Published | May 1969 |
| Frequency | monthly with the exception of January, July and October |
| Cover Price | 0.12 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Characters | Flash [Barry Allen] |
| Genre | superhero |
| Pencils | Ross Andru (signed) |
| Inks | Mike Esposito (signed) |
| Notes | Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (added by Gregory Fischer, May 2009). |
| Characters | Flash [Barry Allen]; Iris West; Mirror Master [Sam Scudder]; Dr. Maybrook; Mako (Dr. Maybrook's valet); Baker (Dr. Maybrook's Assistant) |
| Synopsis | Suddenly, everything Flash sees is green. After a brief battle with Mirror Master, Flash must determine what is causing his inability to see other colors. |
| Genre | superhero |
| Script | John Broome |
| Pencils | Ross Andru |
| Inks | Mike Esposito |
| Notes | Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. |
| Synopsis | Information about the contents of Detective Comics #27 and it's place in history. |
| Genre | Fact |
| Letters | Typeset |
| Letters | Typeset |
| Synopsis | Facts about the speed of sprinters, Halley's Comet, hurricane winds, and star movement. |
| Genre | Fact |