1838-1916 1843-1891 1864-1945 1872-1948 1898-1969 20thcentury andrew bankoftheunitedstates(baltimore banksandbanking biography brain britishcolumbia central cybernetics engineers eugenics exclusiveandconcurrentlegislativepowers hill history historycanadianpacificrailwaycompany historykettlevalleyrailway jamesw lawandlegislation louiswarren marginality mentoringinscience neurophysiologists neurophysiology neuropsychiatry railroads research social states'rights(americanpolitics) unitedstates warrens wz100