The 'Gimme Shelter thang is via me, due to various reasons I believe those shots are from March 15th 1969, the day they supposedly overdubbed the choir(
Mick with choir pic) and also worked on Gimme Shelter.
Not saying it's fact, just that it's likely.
There's other pics and articles from the same magazine -
Rave September 1969 to be exact, which will follow on in time. Sadly the magazine doesn't give dates or photographer credits for the photos, only the writer/interviewers names appear, bugger!