Interesting, and I didn't know he got mail from Marx praising his election. So looked into it and:
Marx and Lincoln - Friends of the Lincoln Collection
Marx and Lincoln by Jeffery R. Kerr-Ritchie Karl Marx, Public Domain In November 1864, Abraham Lincoln was re-elected president of the United States. Numerous bodies outside America welcomed his re-election. One such was the International Working Men’s Association (IWMA). The IWMA was officially...
www.friendsofthelincolncollection.org
Overall I found it interesting.
It also shows just how drastically the Republicans have changed since the 'switch'.