
Brennan's Gyroscopic Mono-rail Car
1907
1907
1911
1839 (original); circa 1988 (replica)
1705-1737
1830 (original); 1967 (model)
1903 (original); 1982 (model)
1990-96
1910
1955; 1830
1906
1906
1910
1910
1906
1934
1907
2000-100 BCE
1872 (original); 1909 (model)
1910
1908
1909
1910
circa 1910
1907
1910
1772 (original); 1919 (model)
1908
1925; 1862
1910
1801-1892 (prepared); 1946 (element replaced)
1908
4000-2001 BCE
1911
1907
1930 (replica); 1834 (original)
1909
1906
1909-1910
1907
1934
1956-09
1952-3
1936
1956-09
1610; 1923
1668; 1924
2050-1750 BCE
before 1907
1990-95
1910