Welcome to Historic Lincoln County in New Mexico, USA that was established in 1869.
If you're traveling on U.S. Route 54, between mile marker 143 & 144 you'll see the junction for New Mexico State Road 55, and then you'll need to drive about 10 miles on that road to the cache at the county line.
Note: Also see Bookmark List named Lincoln County, NM Welcome Series by D+M which is a series of 11 caches placed at each sign when entering Lincoln County, New Mexico (#1=GC8QDVZ; #2=GC8QDW5; #3=GC8QDW7; #4=GC8QDW9; #5=GC8QDWC; #6=GC8QDWE; #7=GC8QDWG; #8=GC8T2HX; #9=GC8X7R5; #10=GC8X7T3; #11=GC8X7TK)