A small tour

Saw this tour a few months ago and have been meaning to attend.
Today I did!
People who know me (usually under duress ...) know I have a passing interest in books and maps.
Seeing so many "sweeties" under one roof in so short a time I was overcome with excitement and had to excuse myself a short way into the tour.
Fortunately one of the tour guides provided an adequate excuse, in that the area we were standing was warm and the air was stagnant, and that he quite often suffered from lightheadedness ...
If you are bibliophile and you are visiting Munich (or I think ANY city) search these tours out, I think they would be well worth it.