You mean like 1829, Civ and Revolution? I think he has awesome games.
Not a lot of plays of the first two happening these days.
I think 1825 (also his) is more developed than 1829 and that Francis's vision wasn't what ended up happening in 1830 which more or less spawned most of the following 18xx games. There has been a reprint of 1853, but I still don't know why.