So far on my trip I have found:
Keller-2806
Trophy Club-2810
Texas Motor Speedway- T-128
Plano-2810
Lewisville-Vortex
Okmulgee-CTI sirens
Dallas- T-Bolts
Irving-612, 2001
Tulsa-3016s
I will post photos when I can. I'm gonna get the Irving water tower siren(612) some time this week.
More To come.