Steve
En-Route
A handy 62 page quick reference when flying in TX...
ftp://ftp.dot.state.tx.us/pub/txdot-info/library/pubs/bus/aviation/general_pilot_032509.pdf
ftp://ftp.dot.state.tx.us/pub/txdot-info/library/pubs/bus/aviation/general_pilot_032509.pdf