Cook, Robert (1994) Baptism of Fire: The Republican Party in Iowa, 1838–1878. Iowa State University Press, Ames. ISBN 9780813819389

Hart, Vivien (1994) Bound by Our Constitution: Women Workers and the Minimum Wage. Princeton Studies in American Politics . Princeton University Press, Princeton, NJ, xv 255. ISBN 9780691034805

Timpson, Annis (1994) The Politics of Employment Inequality in Canada: Gender and the Public Sector. In: Evetts, Julia (ed.) Women and Careers: Themes and Issues in Advanced Industrial Societies. Longman Sociology Series . Longman, London, pp. 44-57. ISBN 9780582101944