Nolan
Quads: 13 areas, 1 has spot elevation 2607     2600+   Lake Trammell
        1 area on Bench Mountain, with BM Bench 2603    2600+   Bench Mountain
        1 area in Nena Lucia oil field  2600+   Dew Drop Creek

There is one area that is likely the highest:
LiDAR   793.70m/2603ft  -100.42131 32.26836 USGS one meter x36y358 TX West Central B11 2018
There are two areas about 2 miles NNE that are roughly 2601' 
The remaining 12 areas are all under 2600' per LiDAR.

Data from https://apps.nationalmap.gov/3depdem