2008-07-24: Cardiff City 1-0 Celtic, Algarve Challenge Cup, Faro – Pictures – The Celtic Wiki

Celtic Team Line-Up 1927-28 – The Celtic Wiki

2007–08 Celtic League - Wikipedia

FootballAwaydays on X: ON THIS DAY 2003: Celtic in Seville for the UEFA Cup Final against FC Porto #COYBIG #Celticfc / X

2009-11-05: Hamburg 0-0 Celtic, UEFA Cup – Pictures – The Celtic Wiki

1998-08-26: Croatia Zagreb 3-0 Celtic, Champions League – Pictures – The Celtic Wiki

Celtic Seville 1

2007–08 Celtic F.C. season - Wikipedia

Celtic fans in spain hi-res stock photography and images - Alamy

Soccer - The Algarve Challenge Cup 2008 - Cardiff City v Celtic - Estadio Algave. Stephen McPhail, Cardiff City Stock Photo - Alamy

Marian Shved admits he's got the Celtic bug as he arrives at Parkhead - Daily Record

1977-05-07: Celtic 1-0 Rangers, Scottish Cup Final – Pictures – The Celtic Wiki

Celtic 6-0 Motherwell: Champions celebrate trophy lift with scintillating final-day victory - BBC Sport

1977-05-07: Celtic 1-0 Rangers, Scottish Cup Final – Pictures – The Celtic Wiki