The name Angel is used by, at least, 181 bands, according to https://www.discogs.com/
These are photos from concerts where Angel played, so they may be of other bands that played the concert as well.
Styx / Angel Dec 18, 1978 Chicago, Illinois, United States Uploaded by Cb 57
Styx / Angel Dec 14, 1978 Pittsburgh, Pennsylvania, United States Uploaded by Glenn G.
Styx / Angel Dec 9, 1978 Boston, Massachusetts, United States Uploaded by Krock
Styx / Angel Dec 8, 1978 Philadelphia, Pennsylvania, United States Uploaded by Zimtrim
Styx / Angel Dec 8, 1978 Philadelphia, Pennsylvania, United States Uploaded by Crcoll58
Styx / Angel Dec 7, 1978 New York, New York, United States Uploaded by Zimtrim
ANGEL / Blue Oyster Cult / Bob Welch / Eddie Money / STYX / The Godz Aug 26, 1978 St. Louis, Missouri, United States Uploaded by Alma Gayle Jr.
ANGEL / Blue Oyster Cult / Bob Welch / Eddie Money / STYX / The Godz Aug 26, 1978 St. Louis, Missouri, United States Uploaded by John Murray
Angel / Head East / The Godz May 7, 1978 San Diego, California, United States Uploaded by Zimtrim
Blue Öyster Cult / Angel / Godz Apr 8, 1978 Huntsville, Alabama, United States Uploaded by John Keel
Angel / Starz / The Godz Apr 1, 1978 Toledo, Ohio, United States Uploaded by Cardude
Angel / Hawkwind / The Godz Mar 17, 1978 Upper Darby, Pennsylvania, United States Uploaded by Zimtrim
