L. Gardner Robinson-type Hot Air Engine
1900
1900
1910
1950
1935
circa 1930
1985 (1989)
1873-1883
1873-1880
1874-1880
1874-1884
1874-1884
c.1860
c.1883
1873-1883
1874-1884
1874-1881
c.1880