
Brennan's Gyroscopic Mono-rail Car
1907
1907
1830 (original); 1967 (model)
2000-100 BCE
1934
1955; 1830
1907
1872 (original); 1909 (model)
1908
1906
1906
1906
1801-1892 (prepared); 1946 (element replaced)
1908
1907
4000-2001 BCE
1934
1839 (original); circa 1988 (replica)
1906
1772 (original); 1919 (model)
1990-96
1907
1907
1930 (replica); 1834 (original)
1705-1737
1908
1903 (original); 1982 (model)
1902; 1913-1920
1936
1990-95
1925; 1862
1783; 1914
1906
1907
1908
1908
1906
1908
1907
1906
1908
1908
1908
1906
1907
1908
1970-1900
1907-1908
1906-1907
1906
1906-1908