For those interested in Australian climbing history, the sydney rockies have the original John Ewbank 1967 guide to the Blue Mountain up on their site:

http://routes.sydneyrockies.org.au/display/nswrock/Old+Guidebooks

This was the first time the Ewbank grading system (aka the Australian grading system) was used, so the introduction contains the definition of the system. I might copy it into the Tas Climbing Guides at some point. The "Ethics" section is a good read too.

Should go and scan the old Tas guidebooks in the library one day too.