With good reason, even in the small slice of the timber framing community that uses this forum, there seem to be a bunch of folks who cite and use digital copies of Hodgson's Light & Heavy Timber Framing -
I'm glad for Google Books, but there are other digital libraries, some do a far better job scanning, and have a more user friendly interface...
A searchable database, and downloadable EPUB versions for your e-reader - Way more easy reading than sitting at the desk...
Hodgson's L&H TF -
http://www.archive.org/stream/lightheavytimber00hodguoft#page/n1/mode/2upDigital Library -
http://www.archive.org/details/lightheavytimber00hodguoft