Back in the day when I was working on the first of the va...

Back in the day when I was working on the first of the vampire books, Those Who Hunt the Night, I went to London for a World Fantasy Con, and found a bookstore there that specialized in old Baedekker's Guides. I spent ENTIRELY too much money on them, but boy, am I glad I did! Accurate maps of London and Oxford (and every other town in Britain) in 1905... what a useful delight!