model locomotion no 1
1825
1825
circa 1840
1837
1840
1837
1833
1815-1825
1827
1837
1934
1834
1834
1834
1821-1831
1835
1825
1837
1815
1955; 1830
1835
circa 1832
1837
1831
1829
1837
1832
1836
1825-1835
1815
2000-100 BCE
1815
1893-4
1863-7
1837
1838
1820
1822-1840
1831
1839
1839
1826
1840
1812
1813
1820-1830
1838
1826
1838
1826
1839