Quite of bit of this information is being made available on the Web as well. Finding both government documents and statistical information can be a real challenge. A trip to the reference desk is probably the quickest way to zero in on what you need. Geographic information Atlases and maps are the main sources of geographical information in libraries, though many encyclopedias and dictionaries have maps which may be sufficient for your purpose. There are different kinds of specialized atlases much as there are different kinds of dictionaries.
Some atlases contain statistics such as population, economic factors, weather, and other facts.
There are historical or thematic atlases which show the world at certain dates or during certain events, such as wars. You might want to find additional works by a certain author or works on a certain subject. There are hundreds of different kinds of bibliographies compiled for different purposes, and your reference librarian can let you know which ones might be useful in the topic area of your research. Remember that a bibliography will tell you a work exists, but it may not be held by your library. If you find an interesting item in a bibliography, consult your library's catalog to see if it's available in the collection.