I suggested:
>Take [RMS] to the U of M fruit farm,


Here's the link : http://www.maes.umn.edu/components/ROCArb.asp

They've renamed the place since my childhood.
    Was "Fruit Breeding Farm"
    Now "Horticultural Research Center and The Arboretum"

They did NOT develop the Jonathon.
They DID breed the Honeycrisp.

On the home page (linked above):

Established in 1908 as the University's Fruit Breeding Farm, the 
Center's earliest goal was to develop apple varieties that would 
thrive in Minnesota.  The HRC, on 230 acres, is one of only a few 
facilities in the world dedicated to breeding and developing 
cold-hardy fruit and woody landscape plants.