North American Fruit Explorers mailing list at ibiblio

[Lucky Pittman <lucky.pittman@murraystate.edu>]

Jim,
I don't know if it's rated for zones 4 or 3, but MonArk is my 
preferred summer apple.  Good for eating out-of-hand, good for 
cooking, and it will keep for 6 weeks or more under 
refrigeration(if  you don't eat 'em all before then!)

Lucky