Where to find Rolling Stones trivia?
 

I have a vague recollection that in about 1981 (+/- a few years) the Rolling Stones gave a concert in Leningrad and opened with the Beatles song "Back in the USSR." How can I verify (or falsify this)?
I did a Google search of Stones web sites and came up with nothing. The only Leningrad concert I could pull up was Billy Joel in 1987.

I only remember this event (although much later in '89) :

Moscow Music Peace Festival

Definately no sign of the Stones there though.

trivia:

The Rolling Stones were secretly killed in 1972, they were replaced with quasi-capable sythemech units that function only on opiates and grain alcohol. The reasoning was that no one would notice..

Good point - they all look as bad as they did in 1972...