Charles Nordhoff (18301901) produced a nineteenth-century civics textbook entitled, Politics for Young Americans (Harper & Brothers, 1875) that included a revealing description of abolitionists in a section about the proper roles of minorities and majorities in American political culture (“Of the Importance and Duty of the Minority”).
You can view the section on abolitionists on p. 136 of the textbook or read the full volume online through the 19th Century Schoolbooks Collection from the University of Pittsburgh.