Gordon Skilling) (1970). Pioneers of the Peaceable Kingdom (1970). Twentieth-century pacifism (1970). Pacifism in Europe to 1914 (1972). Nationalism and populism in partitioned Poland: Selected essays (1973). The Slovak National Awakening (1976). Polish Revolutionary Populism (1977). Fighting Joe Martin : founder of the Liberal Party in the West : a blow-by-blow account (1981). The roots of war resistance : pacifism from the early church to Tolstoy (1981). The Mahatma and mother India : essays on Gandhiʾs non-violence and nationalism (1983). The military question in the early church : a selected bibliography of a century’s scholarship 1888-1987 (1988). The Quaker peace testimony 1660 to 1914 (1990). Freedom from war : nonsectarian pacifism, 1814-1914 (1991). Studies in Peace History (1991). Folk Cultures and Little Peoples : Aspects of National Awakening in East Central Europe (1992). Freedom from violence : sectarian nonresistance from the Middle Ages to the Great War (1992). A brief history of pacifism from Jesus to Tolstoy (1992). Records of conscience : three autobiographical narratives by conscientious objectors 1665-1865 (1993). Pacifism to 1914 : an overview (1994). Bart de Ligt (1885-1938) : overdenkingen bij het herlezen van "La paix créatrice” na 51 jaar = Reflections on rereading "La paix