Just a public service note on libraries and library funding: the average US family pays approx. $27 per yr. in property taxes to support the local public library. At current avg. retail prices, that amount will buy less than 2 hardbound books. Public libraries are one of the greatest bargains in the world.
Libraries depend largely on circulation patterns in order to decide what to buy; they live and die by their statistics. When money is tight, they tend to buy more of what is already popular with their patrons, because it is good for the numbers. If you want your library to buy materials in an area they don't currently have anything on, you should ask, and ask often, for the things you want.
Some libraries that are very short on collection development funds have made it a policy not to buy any circulating title that is updated with a new edition annually, so there are quite a number of them that do not carry any annually published travel guides at all. Ask if this is your library's policy, and if so, see what you can do to convince them to change it.