Karg-Thompson 57-City TSP, Lat-Long (from Getty Thesaurus)
41.0667  -81.5167 Akron, OH
33.7333  -84.3833 Atlanta, GA
39.2833  -76.6000 Baltimore, MD
33.5167  -86.8000 Birmingham, AL
46.8000 -100.7833 Bismarck, ND
42.3500  -71.0500 Boston, MA
42.8833  -78.8667 Buffalo, NY
41.1333 -104.8167 Cheyenne, WY
41.8500  -87.6500 Chicago, IL
39.1500  -84.4500 Cincinnati, OH
41.4833  -81.6833 Cleveland, OH
39.9500  -82.9833 Columbus, OH
32.7833  -96.8000 Dallas, TX
39.7333 -104.9833 Denver, CO
41.6000  -93.6000 Des Moines, IA
42.3167  -83.0333 Detroit, MI
37.9667  -87.5500 Evansville, IN
41.1167  -85.1167 Fort Wayne, IN
40.2667  -76.8833 Harrisburg, PA
46.5833 -112.0333 Helena, MT
29.7500  -95.3500 Houston, TX
39.7667  -86.1500 Indianapolis, IN
32.2833  -90.1833 Jackson, MS
30.3167  -81.6500 Jacksonville, FL
38.5667  -92.1667 Jefferson City, MT
39.0833  -94.5667 Kansas City, MO
42.7167  -84.5500 Lansing, MI
34.7333  -92.2833 Little Rock, AR
34.0500 -118.2333 Los Angeles, CA
38.2500  -85.7500 Louisville, KY
35.1333  -90.0333 Memphis, TN
43.0333  -87.9000 Milwaukee, WI 
44.9667  -93.2500 Minneapolis, MN
36.1190  -86.6890 Nashville, TN
29.9500  -90.0667 New Orleans, LA
40.7000  -74.0000 New York, NY
41.2500  -95.9333 Omaha, NE
40.6833  -89.5833 Peoria, IL
39.9500  -75.1500 Philadelphia, PA
33.4333 -112.0667 Phoenix, AZ
44.3667 -100.3500 Pierre, SD
40.4333  -79.9833 Pittsburgh, PA
45.5167 -122.6667 Portland, PA
35.7667  -78.6333 Raleigh, NC
38.6167  -90.1833 Saint Louis, MO
40.7500 -111.8833 Salt Lake City, UT
37.7667 -122.4167 San Francisco, CA
47.6000 -122.3167 Seattle, WA
47.6500 -117.4167 Spokane, WA
39.8000  -89.6333 Springfield, IL
37.2000  -93.2833 Springfield, MO
27.9333  -82.4500 Tampa, FL
41.6500  -83.5500 Toledo, OH
39.0333  -95.6667 Topeka, KS
36.1500  -95.9833 Tulsa, OK
38.8833  -77.0333 Washington, DC
37.6833  -97.3333 Wichita, KS