From Queenpedia.com
Pro Shots
31.03.74 The Rainbow, London
Around 10 minutes of material has been seen, from a heavily copied tape.
24.12.75 Hammersmith Odeon, London.
Broadcast at the time on BBC2 in the UK. Most DVD copies originate from a Japanese show called "Rock Masters".
18.09.76 Hyde Park, London
Some footage from this show was used on various promotional clips, notably Tie Your Mother Down & Somebody To Love. The most usual copy is a "QTV" version. QTV is an in-house channel at Queen Fan Club conventions. Somebody has then recorded that signal and circulated it. So this is a second generation recording of the Queen Fan Club's copy.
06.06.77 Earl's Court, London
11.12.77 The Summit, Houston
Long held as having legendary status, mainly due to it's scarcity.
24.04.79 Budokan, Tokyo
Around 30 minutes
26.12.79 Hammersmith Odeon, London
Part of a series of concerts in aid of Kampuchea.
To be continued...