I believe that everything related to the subject belongs in such a library, the good and the bad.
This way you get a truer picture of the times.
See also:
http://books.google.com/books?id=HcDMKrh-_fEC&pg=PA374&lpg=PA374&dq=South+Carolinians+offer+to+“buy”+Hamlin&source=bl&ots=t3iLdZM3po&sig=RQteeaykjtRkYQGpHI6lmqYKPCo&hl=en&sa=X&ei=3ozoUdvTDeKniQLR8IDgCg&ved=0CCoQ6AEwAA#v=onepage&q=South%20Carolinians%20offer%20to%20“buy”%20Hamlin&f=false