
Brennan's Gyroscopic Mono-rail Car
1907
1907
1830 (original); 1967 (model)
1906
1907
1872 (original); 1909 (model)
1955; 1830
1906
1906
1934
2000-100 BCE
1908
1990-96
1907
1801-1892 (prepared); 1946 (element replaced)
1934
1908
1952-3
1839 (original); circa 1988 (replica)
4000-2001 BCE
1930 (replica); 1834 (original)
1908
1705-1737
1907
1907
1772 (original); 1919 (model)
1903 (original); 1982 (model)
1906
1936
8500-2000 BCE
1925; 1862
1960-1979
1962-07
1968-04
1908
1907
circa 1908
1907
1906
1907
circa 1906
circa 3000 BCE
2000 BCE
1908
1908
1908
1907
1908
1907
1908
1906