Thank you Rob for the extra info.
I don't have any listing, or photos. for the MPC goodies, only the "Lionel Post War Library" list, but now, thanks to you Rob, I see the MPC steam locomotive #8206 with the Baldwin Disc Drive Wheels in the 4-6-4 wheel arrangement.
Bum,
After clicking onto the link I posted, click onto the left column listing of locomotives.
If, that don't work, then type: "Lionel Post War Library."
Before, I could not find those Baldwin Disc Drive Wheels on any 4-6-4 wheel arrangement steam locomotives, without the proper locomotive number, which Rob provided.
BUT! I did find those Baldwin Disc Drive Wheels on 2-6-2 steam locomotives:
Pre-War (Inter-Net);
Post War the "Lionel Post War Library," which I posted
AND
MPC (Inter-Net).
Ralph