Janet L. Coryell, "Carroll, Anna Ella," American National Biography Online, February 2000, http://www.anb.org/articles/16/16-01826.html.
Carroll's true importance, however, lies in her early political writings. Not only did she articulate the positions of the Know Nothing party in the 1850s, but she also articulated to Lincoln the concerns of the border states and their fears regarding the effect of abolition. (Carroll freed her family's slaves in 1855.) Her strong personality, her gift for promoting herself as well as others, and her ability to keep herself in the public eye until her death contributed to the legend surrounding her work.