Louie, here's the 40x60 i was able to locate for
OZ. It's not the most detailed as the scan wasnt all that clear, is a B/W image, but it is from the pressbook and is labeled as the
"40x60 Oil Paint Process Display," to the left of the poster.
On the PB page, this piece was actually under a header called
"Special Rental Accessories":
This, I'd love to see in full colour, that's for sure.