That is pretty impressive! CSX has a similar engineer-cum-amateur cartographer... I believe his last name was Beaver... he mapped the majority of (if not all of) the system... he originally mapped his division, and that one piece was so popular, CSX commissioned him to do the rest of the railroad.. or so the story goes! Regardless, anyone within CSX with a complete set of "Beaver" maps was/is popular, as the maps were used extensively by management for operations and marketing studies, etc.