Passage: After working a handful of years in Wyoming for AMNH in the late 1890s, Brown led an expedition to the Hell Creek Formation of Southeastern Montana.  There, in 1902, he discovered and excavated the first documented remains of Tyrannosaurus rex.The Hell Creek digs produced extravagant quantities of fossils, enough to fill up whole train cars.  As was common practice then, Brown's crews used controlled blasts of dynamite to remove the tons of rock covering their fossil discoveries.  Everything was moved with horse-drawn wagons and pure manpower. Seldom was any site data recorded.

Question: Where did Brown go after Wyoming?
Southeastern Montana