Thirty years view; or A history of the working of the American Government for Thirty Years, from 1820 to 1850

https://archive.org/details/thirtyyearsviewo01bentuoft

https://archive.org/details/thirtyyearsview02bentgoog

https://archive.org/details/thirtyyearsviewo01inbent

https://archive.org/details/thirtyyearsviewo02bentrich

https://archive.org/details/cihm_50187