Kansas City Office
1150 Grand Blvd, Suite 510
Kansas City, MO 64106
Phone: 816-460-0600
Apprx. Coords- -94.58204 39.10033
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Springfield Office
901 E St. Louis St, Suite 306
Springfield, MO 65806
Phone: 417-864-8340
Apprx. Coords- -93.28288 37.20994
The Google imagery is grainy, but I included it because the USGS address doesn't seem to be plotting to the correct place. I believe the Google marker is more accurate at plotting this office to the tall building.
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St. Louis Office
111 S. 10th St, Suite 11-346
St. Louis, MO 63102
Phone: 314-539-2238
Apprx. Coords- -90.19772 38.62601
This office moved into the new court house around 22 Jun 2000. The official name of the building is the Thomas F. Eagleton Courthouse. They were the first to move into the building on the 11th floor.