I agree with Tony. Put 'em in pots. Then air layer (or take cuttings) to get RKN-free trees, and then burn the originals from the pots. Keep them apart from other trees. (You could also look at some of the other posts/threads about how to get rid of RKN). Still, despite having to "clean them" from RKN, this is a great find! Nice find for you!
Mike central NY state, zone 5a