List of 78 cities for citiesLevel = 1:

Oklahoma City, OK  
Tulsa, OK  
Knoxville, TN  
Atlanta, GA  
Reno, NV  
Flagstaff, AZ  
Phoenix, AZ  
Tucson, AZ  
Jackson, TN  
Little Rock, AR  
Los Angeles, CA  
San Diego, CA  
Pueblo, CO  
Denver, CO  
Washington, DC  
Key West, FL  
Miami, FL  
Orlando, FL  
Tampa, FL  
Boise, ID  
Chicago, IL  
Springfield, IL  
Goodland, KS  
Paducah, KY  
New Orleans, LA  
Bangor, ME  
Caribou, ME  
Portland, ME  
Baltimore, MD  
Detroit, MI  
Marquette, MI  
Duluth, MN  
Minneapolis, MN  
Tupelo, MS  
St Louis, MO  
Billings, MT  
Butte, MT  
Glasgow, MT  
Missoula, MT  
Elko, NV  
Las Vegas, NV  
Albuquerque, NM  
Albany, NY  
Buffalo, NY  
Syracuse, NY  
New York, NY  
Bismarck, ND  
Fargo, ND  
Minot, ND  
Cleveland, OH  
Columbus, OH  
Toledo, OH  
Portland, OR  
Erie, PA  
Philadelphia, PA  
Pittsburgh, PA  
Hartford, CT  
Sioux Falls, SD  
Nashville, TN  
Austin, TX  
Brownsville, TX  
Dallas, TX  
El Paso, TX  
Midland, TX  
Houston, TX  
San Antonio, TX  
Salt Lake City, UT  
Spokane, WA  
Milwaukee, WI  
Richmond, VA  
San Juan, PR  
St Thomas, VI  
St Croix, VI  
Anchorage, AK  
Barrow, AK  
Fairbanks, AK  
Juneau, AK  
Nome, AK