There are several artists and acts that use, or have used, the name Flash:
These are photos from concerts where Flash played, so they may be of other bands that played the concert as well.
Flash Apr 1, 1972 Plymouth, England, United Kingdom Uploaded by Zimtrim
The Kinks / Dr. Hook / Foghat / Flash Mar 12, 1972 Chicago, Illinois, United States Uploaded by Zimtrim
Steppenwolf / Flash Mar 5, 1971 Chicago, Illinois, United States Uploaded by Zimtrim