Ken Johnson – mentioned in an article about Letchworth Library – Full name: Kenneth Robertson Drummond Johnson. As well as being a long term librarian at Letchworth he was also a local historian, local scoutmaster, local member of the Civil defence and local eccentric! Sadly he died on 13th January 2018.
Ken wrote “The Book of Letchworth”.
I upload an image of him (he hated having his photograph taken).