This doesn't look very authoritative, but this page lists local toll free FSS numbers.
http://www.bakercityairport.com/LocalFSS.htm
Or for posterity's sake, here's the list:
AK Fairbanks 866-248-6516
AK Juneau 866-297-2236
AK Kenai 866-864-1737
AL Anniston 866-609-8684
AR Jonesboro 866-520-8890
AZ Prescott 866-226-3763
CA Hawthorne 866-879-8252
CA Oakland 866-469-7828
CA Rancho Murieta 866-272-7525
CA Riverside 866-838-2250
CA San Diego 866-682-2175
CO Denver 866-751-7021
CT Bridgeport 866-293-5149
FL Gainesville 866-523-7229
FL Miami 866-347-0316
FL St Petersburg 866-295-3983
GA Macon 866-276-0243
HI Honolulu 866-766-0820
IA Fort Dodge 866-300-2858
ID Boise 866-258-9068
IL Kankakee 866-450-6593
IN Terre Haute 866-224-9906
KS Wichita 866-672-5145
KY Louisville 866-412-7968
LA Deridder 866-401-5659
ME Bangor 866-295-3835
MI Lansing 866-879-4066
MN Princeton 866-841-6469
MO Columbia 866-223-4352
MO St Louis 866-671-6176
MS Greenwood 866-245-6109
MT Great Falls 866-527-7601
NC Raleigh 866-663-3354
ND Grand Forks 866-306-6931
NE Columbus 866-288-3448
NJ Millville 866-225-7920
NM Albuquerque 866-449-5390
NT Islip 866-365-5019
NV Reno 866-281-2737
NY Buffalo 866-678-2759
OH Cleveland 866-780-8261
OH Dayton 866-505-6163
OK McAlester 866-269-0189
OR McMinnville 866-833-7631
PA Altoona 866-708-9987
PA Williamsport 866-655-6434
PR San Juan 866-822-8537
SC Anderson 866-225-2172
SD Huron 866-732-1331
TN Jackson 866-840-1051
TN Nashville 866-890-1348
TX Conroe 866-689-5992
TX Ft. Worth 866-272-7915
TX San Angelo 866-300-3867
UT Cedar City 866-667-3858
VA Leesburg 866-225-7410
VT Burlington 866-847-1846
WA Seattle 866-384-7323
WI Green Bay 866-845-4888
WV Elkins 866-656-2661
WY Casper 866-227-7498