Randy,
There is a fantastic resource on the internet called "The Civil War Soldiers and Sailors System"
Go to this page:
http://www.itd.nps.gov/cwss/soldiers.htm
Enter "Riddle" in the Last Name box, then Kentucky or Tennessee or Virginia in the State box and click "Submit Query". You'll be amazed at the number of Riddles you find.
Hope this helps. At least it's a start.
Jim Martin