All of my experience is with USGI maps.

You previously could order maps and protractors from the US Army Corps of Engineers. I don't know if that is still possible these days though.

All of the US (actually the planet) has a USGI map available. Most are of very good quality, but may be dated due to a lack of interest in the area. Obviously Ft. Riley KS maps will be more up to date than middle of nowhere western KS.