https://en.wikipedia.org/wiki/White_City_Stadium
https://www.independent.co.uk/arts-entertainment/crushed-to-death-at-a-david-cassidy-concert-1095281.html
https://www.goldminemag.com/columns/death-teenybopper 
https://www.workingwithcrowds.com/london-white-city-stadium-david-cassidy-concert-crowd-incident-26-05-1974/
https://pleasekillme.com/david-cassidy-white-city/