US National Archives
Nara: Treasures of Congress: Wade Davis Bill
This National Archives and Records Administration (NARA) site contains a picture of the original Wade-Davis Bill as well as discussion on the effects it would have had if it had been adopted.
US National Archives
Our Documents: Wade Davis Bill(1864)
On this site you can view an original copy of the document and and also an easy to read version of the complete text. There is also a brief summary of the history behind the bill.