1. An Ordinance for the government of the Territory of the United States northwest of the River Ohio
. (1787). Adopted by the confederation congress. Washington, D.C.: The National Archives and Records Administration. Retrieved from https://www.ourdocuments.gov/document_data/document_transcripts/document_008_transcript.html
2. Samuel Read Hall;American Journal of Education,1858
3. Women and the republic: Emma Willard's rhetoric of history;American Quarterly,1991,