I just started my apple and pear trees 2 years ago, and am farther south than you, so don't know good varieties for your area. However, I can say that you should get two different apples and two different pears for better pollination. I hear pears are more fragile farther north, and some varieties won't pollinate each other. There are some good nurseries with nice info on their websites about this. Miller's is in NY, so nice and cold; Trees of Antiquity are in CA, but are great!
Hopefully someone else here will know more.
Amelie

I'm partial to my Liberty apple on semi-dwarf stock. It's a healthy tree (excellent resistance to blight, rust, scab, and mildew.) It's hardy enough for Western Montana, ripens in October, and to us makes a great pie as well as being wonderful eaten fresh. It keeps fairly well, and is good for cider. It may not be hardy enough for your conditions, but is said to tolerate Zone 4.

The Gold Spice is a small, very flavorful pear that is very winter hardy, a good keeper that is sweet, aromatic, good fresh or for home processing. But it's small- the size of a 60 watt light bulb, if that. Productive, vigorous, and a good pollinator.

This year I grafted Ure to my Gold Spice. It's a little larger that GS, said to be very sweet and juicy, good fresh and canned and stores about six weeks. Naturally semidwarf and somewhat resistant to fireblight.

Flemish Beauty is self-fertile and a good pollinizer, productive and widely admired. But it is somewhat susceptible to fireblight.

Seckel has small fruit on a small, productive and somewhat blight resistant tee. Fruit very sweet, excellent for canning and fresh use. Poor pollen producer.

Winter Nellis is one of the most delicious winter pears- rough to look at, but juicy, aromatic and sweet. A good keeper, fireblight resistant. But it may mature too late (late October) for your climate.

I also added Clapp's Favorite this year on the recommendation of others on this board. And I thought I may as well try an Anjou. I have two other varieties that aren't widely available, so I won't go into those.

Good luck,

Mark