The sheet music is in the Portable Network Graphic (png) format. The images might not look very readable on your computer's screen; they should look just fine when printed.
Several freely downloadable image handling applications are available on the web should you experience difficulty printing them the size you want.
Click here for the website author's contact details.
Click here for Dave Wade's excellent pages which include biographical information about Joe Morley, a full listing of his banjo compositions and many useful banjo links.