The Beaten Path: A History Of American Percussion Music.
It's an excellent thumbnail history of percussion in American conservatory music in the 20th century— the area of “classical” music in which percussion first started being used in a serious way. You'll be familiar with it if, like me, you ever came within spitting distance of a percussion performance degree. It has actually influenced modern marching percussion in a big way, first via Fred Sanford, who studied with Tony Cirone, and Ralph Hardimon, who studied with Cirone and my old professor, Charles Dowd.
Give it a read, learn the names, chase down some of the music on YouTube.