Some US history books that are relatively unknown in the US:
-Ann Douglas "Terrible Honesty" (Study of artists, Black and nonblack in New York/Manhattan in the 20s)
-James W. Douglass "JFK & the Unspeakable"
-Walter Johnson "River of Dark Dreams"
-Gerald Horne "The Counterrevolution of 1776"
-J. Sakai, Settlers (readsettlers.org)
-Ida Wells "Lynch Law in America"