Here is the Super-O track plan you might be thinking of. They are very similar, this one says "Super-O" at the bottom. Perhaps there is another page associated with this plan, as all of the buildings are numbered - presumably identified in a key on another page. If there is another page, that could be helpful to you, but I do not have it.
You have probably seen this illustration, which would appear to be of the "Panoramic" layout plan, not the "Super-O" plan, if the number of ties in each track section is a reliable indicator. However some of the track angles and track positions would indicate that it is an illustration of the Super-O plan, judging by the angle of the two turnouts at the left, and the position of the elevated track in the lower right - which does not reach as far down (toward the edge of the layout) as the lower track does, consistent with the the Super-O diagram. I seem to recall learning that this illustration appeared in "Popular Mechanics" magazine:
I do not know which version would be considered "iconic", I would guess its the Super-O diagram above.