Beth PH:
Toroidal Colonies, 1975 NASA Ames Research Center
Beth PH:
Mother of Storms, John Harris, c1990
Beth PH:
Futuristic taxi airship, Ernst Austerlitz c1904
Beth PH:
Body Mortgage, John Harris, 1988
Beth PH:
Uni-pod, Syd Mead, 1969
Beth PH:
London General Omnibus Company 1910 - 1920
Beth PH:
Robot Railroading, Arthur Radebaugh, 1960
Beth PH:
'Helicopters for everybody', Frank Tinsley, 1951