/ guidebook "star system"
The FRCC guides used to have a recommended routes list which was a precursor to the star system. As to your question, dunno, but it's led to the neglect of many a fine route.
I think Ron James's 'Rock Climbing in Wales', publ. in 1970, was the first UK guide to use a star system.
"Borrowdale - A Climber's Guide" by Paul Ross and Michael Thompson published in 1966 used both stars and E grades for the first time in the Lake District. Stars were limited to a maximum of one per route. Not sure whether it was the first guide ever to use stars but Paul Ross posts on here sometimes as US Brit and he would be able to tell you where the idea came from.
Ross's guide did not have stars or E-Gradings.
Ron James' guide had stars - the first FRCC guide with stars was the Eastern Crags and Buttermere guide in 1979.
E Gradings were (I believe) invented by Pete Botterill and first appeared in guides in 1978 with the FRCC Recent Developments (written by Dave Armstrong, Pete Botterill and Pete Whillance (what a team and what a record for the mid 1970's in the Lakes !)); the FRCC Borrowdale guide and Lake District North guide by Steve Clegg, Colin Read and Bob Wilson.
And yes, I will try and get out more.
It was the '74 Kinder: a single star for good routes.
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