I seemed to have missed something whilst living on the East Coast.
Seeing beautiful ash trees. I see only green-ash species here in the
midwest. And I am guessing that with proper care I can make white-ash
grow here alongside green-ash. But I never appreciated ash trees until
recently.

I saw a picture of a nice red autumn foliage of white-ash which sparked
my newly found desire to grow some.

I found these cultivars are nice colors:

Autumn purple -- purple and red
Greenspire -- orange
Royal Purple
Skyline -- orange-red, semi glossy leaves

I do not ever remember seeing a purplish tree in the northern woods.

I was wondering if any nursery can provide me with the 4 above listed
cultivars.

Archimedes Plutonium,
whole entire Universe is just one big atom where dots
of the electron-dot-cloud are galaxies