The one you mentioned (Rog & Dave in the studio) is the only time I have ever seen more than one member together in that era. There were a set of them online somewhere, I have no idea where. They were taken whilst Rog and Dave were recording the Wall movie soundtrack.

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what do you teach your children about me?
what do you teach your little children about me?
pimp, thug, bling drug lord of the undergrounded kings
how can you be so sure i won't call down the rain?
what do you teach your little children about me?
you point your gun, wait, hide and run. i see it plain