these are the sources we used to make this website
http://www.atlasobscura.com/places/grant-s-tomb
https://en.wikipedia.org/wiki/Grant's_Tomb
http://www.historynet.com/civil-war-weapons
https://en.wikipedia.org/wiki/List_of_weapons_in_the_American_Civil_War
https://www.civilwaracademy.com/civil-war-weapons
https://en.wikipedia.org/wiki/American_Civil_War
https://en.wikipedia.org/wiki/Slave_states_and_free_states
https://en.wikipedia.org/wiki/World_War_I
https://en.wikipedia.org/wiki/World_War_II
https://en.wikipedia.org/wiki/Robert_E._Lee
https://en.wikipedia.org/wiki/Ulysses_S._Grant
https://en.wikipedia.org/wiki/General_(United_States)
http://www.infoplease.com/ipa/A0004604.html
https://en.wikipedia.org/wiki/Five-star_rank
http://www.atlasobscura.com/places/grant-s-tomb
https://en.wikipedia.org/wiki/Grant's_Tomb
http://www.historynet.com/civil-war-weapons
https://en.wikipedia.org/wiki/List_of_weapons_in_the_American_Civil_War
https://www.civilwaracademy.com/civil-war-weapons
https://en.wikipedia.org/wiki/American_Civil_War
https://en.wikipedia.org/wiki/Slave_states_and_free_states
https://en.wikipedia.org/wiki/World_War_I
https://en.wikipedia.org/wiki/World_War_II
https://en.wikipedia.org/wiki/Robert_E._Lee
https://en.wikipedia.org/wiki/Ulysses_S._Grant
https://en.wikipedia.org/wiki/General_(United_States)
http://www.infoplease.com/ipa/A0004604.html
https://en.wikipedia.org/wiki/Five-star_rank