A large proportion of my books are topographic, some will sort of slide sideways into genealogy but that is a bit limiting, there isn't even 'geography' so that I can say 'huh, spose that'll do' even though not really.
John
Have you ever seen how far books travel when the bookcase they are on falls over? And of course sods law kicks in, the only book in the case with a value into three figures (and I don't mean £1.01 either) is the only book to take any damage?