Mellotronists

2007 ended with the sad news of Oscar Peterson joining that ever 
increasing jam session in the sky. It was noted that he was a fellow 
Mellotronist in one posting - and I can certainly attest to that since 
I own his Mk V Mellotron (atleast according the the rack tags). But 
here's the problem: can anyone identify in which period - or on what 
albums - he used his Mk V? This is not a trick question - I'm genuinely 
interested in the history of this instrument. It doesn't seem to fit 
into his favoured accoustic trio format.