In Australia:

Falls Creek(r)
Mt. Buller
Perisher Blue(r)
Thredbo(r)

In Austria:

Hintertux

In British Columbia:

Whistler
Blackcomb

In California:

Alpine Meadows(r)
Homewood Ski Bowl (conglomeration of the former Tahoe Ski Bowl and Homewood Ski Areas)(r)
Heavenly Valley (also in Nevada) (r)
Kirkwood(r)
Mammoth Mountain(r)
Northstar-at-Tahoe(r)
Squaw Valley(r)
Sierra-at-Tahoe (formerly Sierra Ski Ranch)(r)
Sugar Bowl(r)

In Colorado:

Copper Mountain
Keystone
Loveland Basin
Steamboat Springs
Vail(r)
Winter Park(r)

In Maine:

Black Mountain(r)
Kent's Hill
Lost Valley
Mt. Abrams
Saddleback(r)
Shawnee Peak
Sugarloaf(r)
Sunday River(r)

In Massachusetts:

Berkshire East
Jiminy Peak(r)
Mt. Brodie(r)

In Nevada:

Diamond Peak at Incline Village(r)
Heavenly Valley (also in California)(r)
Mt. Rose(r)

In New Jersey:

Hidden Valley(r)
Mountain Creek (Formerly Vernon Valley/Great Gorge)(r)

In New Hampshire:

Attitash(r)
Cannon Mountain(r)
Dartmouth Skiway(r)
Loon Mountain(r)
Mount Cranmore(r)
Mount Sunapee(r)
Waterville Valley(r)
Wildcat Mountain(r)

In New York:

Hunter Mountain
West Mountain(r)
Whiteface Mountain(r)
Windham(r)

In Oregon:

Mt. Hood

In Pennsylvania:

Big Boulder(r)
Blue Mountain (formerly Little Gap Ski Area)(r)
Camelback
Elk Mountain(r)
Jack Frost(r)
Montage
Seven Springs(r)
Shawnee
Tussey(r)

In Switzerland:

Saas-Fee

In Utah:

Alta
The Canyons
Deer Valley
Park City
Snowbird

In Vermont:

Bromley(r)
Killington(r)
Middlebury Snow Bowl(r)
Mount Snow(r)
Pico(r)
Stowe(r)
Sugarbush(r)
Suicide Six(r)

TOTAL=73