This seems as good a place as any for me to recommend 2 books by James W. Loewen: Lies My Teacher Told Me: Everything Your American History Textbook Got Wrong and Lies Across America: What Our Historic Markers and Monuments Get Wrong.

Nothing especially musical here, but they might inspire you to look for (or write) songs that redress the imbalance.

These books really excited me. I wish I had time to write more about them; the 2 reviews that I linked to will have to do for now.