In 1808, Thomas Clarkson published his two-volume text, The History of the Rise, Progress and Accomplishment of the Abolition of the African Slave Trade by the British Parliament, after the prolonged campaign to abolish the slave trade in the British Empire. Within this text, Clarkson has placed his own map of the path to abolition, made up of the efforts of prominent intellectuals, politicians and religious organizations. This essay will argue that Clarkson's map overlooks the informal abolition activities that coincided with the official abolition campaign both within and outside the map's period; in fact it ends twenty years before the passage of abolition legislation in 1807. This topic will also examine the role of marginalized groups, including women, blacks and the public, in the non-informal activities involved in the crusade to abolish slavery. Recent scholarship and some primary texts will be used to posit that various informal activities are absent from Clarkson's map and need to be examined for their contribution to the crusade. The map examines activities and individuals missing from the current time frame, which ends in the year 1787, so this study will explore activities after 1787 that should have been included on the map. One point of conflict on the map is the twenty-year gap between 1787 and 1807, arguably a critical period on the eve of abolition. The map does not show the contributions that ultimately pushed Parliament to pass legislation to abolish the slave trade. Within this divide, Clarkson also overlooks the important contributions made by marginalized groups to abolition. Historians have moved away from traditional studies of trade abolition to focus on......middle of paper......de. They served as a device to generate popular sentiment against the slave trade. Drescher argues that these media were significant in the first national mobilization. For example, the organizers of the Manchester petition publicized the abolition of the slave trade by submitting their petition to every major English newspaper to promote the creation of more petitions by readers (Drescher, 49). The Manchester Committee has disseminated information from its petition to others. Advertised in all major English newspapers to encourage readers to submit/organise similar petitions (Drescher, 49). Manchester serves as a model petition. The published Manchester petition was central to public agitation against the slave trade. Ten days after newspapers first reported Manchester's petition to the General Post, public agitation/attack on slave trade (Drescher, 49).