+1 on Bud's recommendation. Check AutoTrader.com, FordDirect.com among others. Southern states' cars fare better than up here in the north. I just checked cars.com, found 27 1997-1998 LSC models searching all miles from my zip code here in the Detroit area.
There's a black 97 LSC in Elgin, IL near you that has 24,000 miles and he wants $14,900. However according to NadaGuides.com that 97 LSC with those very low miles tops out at $4,825. Somebody tell the owner that! But then, with these miles and the shape it's in I'm sure you wouldn't want to subject it to daily-driver duties.
Good luck finding your next ride!!
ADDED: There's a 98 black LSC right here in our forums:
http://www.lincolnsofdistinction.org/vbulletin/showthread.php?t=33065 in New Jersey, 82K miles for $3750.