London General Bus Route Map - How To Travel About London - December 1921

This is a London General Bus Map dated December 1921 (year not shown) -
'How to Travel About London - Map of the London General Bus Routes'.

It is 76mm wide x 150mm deep and the map folds out to approximately 380mm wide x 450mm deep and shows the London General bus routes on one side, and a list of routes on the other side with through running times and fares.

It is in well used rather grubby condition with some splits at the folds although completely intact, but it is well over 100 years old (see photos).

I will send this map by Royal Mail letter post and will obtain a Certificate of Posting.