Here are Some Additional Resources for a Possible Civil War/Reconstruction Unit
http://www.civilwar.org/education/students/
http://www.pbs.org/civilwar/classroom/annotated_list.html
http://www.history.com/topics/civil-war-technology
http://www.education.com/study-help/article/era-reconstruction-18651877/
http://www.princeton.edu/~achaney/tmve/wiki100k/docs/Reconstruction_era_of_the_United_States.html