Although I have been a member of this forum for some years I have not posted anything yet. So here goes For those interested in the Chesham Branch here is a link to some Metropolitan Railway signalling diagrams showing the Chesham Branch signalling in 1933 (or thereabouts). This is extracted from a book I have that shows all of the signalling between Baker Street and Great Missenden.
Excellent information. Thank you for taking the time to prepare it and post it. Of course, you made one fatal mistake - you mentioned you have more :-). If you ever get the time to post it, I for one would love to see it.
"Rules are for the guidance of wise men and the observance of fools"