
Brennan's Gyroscopic Mono-rail Car
1907
1907
1839 (original); circa 1988 (replica)
1907
1955; 1830
1902; 1913-1920
1934
1907
2000-100 BCE
1872 (original); 1909 (model)
1908
1772 (original); 1919 (model)
1990-96
1907
1952-3
1908
1705-1737
1801-1892 (prepared); 1946 (element replaced)
1934
1908
4000-2001 BCE
1903 (original); 1982 (model)
1830 (original); 1967 (model)
1930 (replica); 1834 (original)
1907
1668; 1924
1888; 1984
2050-1750 BCE
1990-95
1834-1836
1908
1908
1610; 1923
700 BCE; 1931
6000-5000BCE
1879 (1956)
1960-1979
1907
circa 1908
1925; 1862
1923-07
1979-80
1940-03
1933-05
1942-07
1942-07
1939-02
1963-01
1934-08
1969-03
1969-05