Classificação da Biblioteca do Congresso dos E.U.A. (LCC)G1100-1779

18th century(37) 19th century(82) agriculture(21) American(63) American Military History(8) American Revolution(46) American West(50) Arkansas(26) army(14) battles(28) Boston(19) California(204) camping(14) Canada(265) cartography(256) cities(61) climate(16) demographics(20) driving(13) environment(23) exploration(38) fishing(24) genealogy(414) geography(1,007) geology(31) guide(54) guidebook(71) Hawaii(36) hiking(32) history(1,515) Iowa(35) jam(15) Kentucky(38) land(16) local(22) map(474) maps(2,847) Maryland(46) Mexico(98) Michigan(65) migration(35) military(119) military history(215) Minnesota(61) Mississippi(18) New Hampshire(47) New Jersey(31) New Mexico(55) New York(234) North America(164) Northwest(14) nyc(90) Ohio(45) Ontario(25) outdoors(21) photographs(24) photography(36) population(12) recreation(23) reference(1,489) Rhode Island(28) roads(48) social studies(117) Southwest(16) state(15) studio(17) Tennessee(27) Texas(91) topography(15) tourism(16) trains(31) travel(812) U.S. History(78) United States History(23) us(103) usa(795) Vermont(40) Virginia(100) war(60) Washington(47) Washington DC(26) Washington State(13) Wyoming(21)