This is hands down the BEST guide to canoeing in Pennsylvania
Also Paddlersguides.com is the official website for Author Edward Gertler's works Maryland and Delaware Canoe Trails, Garden State Canoeing and Keystone Canoeing. For a free sample map of Tonoloway Creek and Little Tonoloway Creek (As seen in Md & Delaware Canoe Trails and Keystone Canoeing) visit the site and download the PDF. The map includes a description of Tonoloway Creek.
Solid reference catalog of streams, but be careful as you will occasionally find information that is either outdated or otherwise wrong. Also keep in mind that the author, Ed "Boulderbuster" Gertler, is willing to paddle smaller, rocky stretches of streams that the casual canoeist generally would avoid.
An excellent guidebook for canoe and kayak enthusiasts. Tons of paddling spots are listed, along with a ton of useful information. The reviews are informative as well as humorous.