Filming seemed to take place in a limited number of spots, so you see some very familiar scenery repeating both within and between episodes. Be prepared for a chase scene passing the same trees and rocks several times, as well as certain scenes cropping up in stories supposedly hundreds of miles apart. Standard stuff for its day.
In War of the Silver Kings (1957) it is revealed that Bret Maverick was originally from Chicago. Then in Trail West to Fury (1958) the brothers state they grew up in Texas.