There are multiple artists using this name.
These are photos from concerts where Crowbar played, so they may be of other bands that played the concert as well.
Crowbar / Eyehategod Jan 12, 1993 Frankfurt am Main, Hesse, Germany Uploaded by Murmlermicha
Alice Cooper / Edgar Winter's White Trash Featuring Jerry Lacroix / Dr. John / Chilliwack / Sundance / Crowbar Dec 31, 1971 Toronto, Ontario, Canada Uploaded by Zimtrim
Van Morrison / Crowbar Oct 15, 1970 Toronto, Ontario, Canada Uploaded by Zimtrim
Grand Funk Railroad / Ten Years After / Sly and the Family Stone / Cactus / Alice Cooper / Lighthouse / Crowbar / Syrinx Aug 9, 1970 Bowmanville, Ontario, Canada Uploaded by Zimtrim