There are at least five bands with the name 'Grapefruit': a psychedelic rock band band from London (1), a punk band from Hawaii (2), a czech crossover band (3) and an anarcho-folk/punk duo from England (4) a electronic project in Portland, Oregon (5).
These are photos from concerts where Grapefruit played, so they may be of other bands that played the concert as well.
The Move / The Byrds / The Bonzo Dog Band / The Easybeats / Joe Cocker / Grapefruit / bobby goldsboro Jul 7, 1968 London, England, United Kingdom Uploaded by Zimtrim
The Bee Gees / Dave Dee, Dozy, Beaky, Mick And Tich / Grapefruit Apr 7, 1968 Birmingham, England, United Kingdom Uploaded by Zimtrim