[Homer_J_Simpson]

Personal Memoirs is a great read. (My paperback copy doesn't include any of those maps.) I recommend Jean Edward Smith's bio of Grant as a supplement. He provides a more clear and colorful accounting of Grant's own exploits in Mexico and, IMO, provides a better overview of the Mexican War.

[EternalVigilance]

An excellent book. I think Smith gives Grant his due, unlike the horrid treatment given him back in the ‘80s by William McFeely in his biography of the man.