Need more Presidential Help

Question

As the presidential election draws near now would be a good time for a few more volunteers to join the Presidential project.  We need help with the following three remaining presidents.

1. 11th President James K. Polk - Democrat
2. 21st President Chester Arthur  - Republican
3. 28th President William McKinley - Republican (assisinated in office)
4. 28th President Woodrow Wilson - Democrat
5. 29th President Warren G. Harding - Republican

Check it out here http://www.wikitree.com/wiki/Space:Presidential_Project_Page