Classificação da Biblioteca do Congresso dos E.U.A. (LCC)TF22.G74

19th century(237) American(72) American West(123) architecture(317) biography(118) Boston(62) Britain(203) California(213) Canada(164) children(125) children's(158) construction(84) design(123) diagrams(17) early 20th century(34) engineering(187) England(162) ephemera(52) Europe(57) Great Britain(46) history(3,193) how-to(46) industrial(17) industry(25) informational(51) juvenile(69) London Underground(152) machines(41) maps(153) Michigan(31) model(51) models(112) museums(38) New Jersey(33) New York(306) North America(75) nyc(111) Ohio(48) photographs(429) photography(717) picture book(220) railroading(165) reference(221) regional(44) Santa Fe(38) Scotland(60) southern(39) subway(317) train stations(134) trains(3,188) travel(405) tube(37) uk(81) underground(159) usa(383) vehicles(143) Virginia(44)