If you dont have it pinned yet in Wakeeney Kansas, there's a Darley model 2 at 4th St/Russel Ave atop the travel and tourism building. I can confirm the south tbolt by the ballfield is still up.
Texas Map update
As of August 6th 2022 both SD-10's in Hereford have been replaced with Eclipse 8's so for as for the rest of the system I do not know if someone has anymore information please let me know thank you