Archival methods for rare books and map

Professor,

In reading about the development of your personal collection of books, charts, maps, art, and other media for the display of information, I wonder if you would share your opinions and perhaps recommendations on the storage of archival materials. Books are the least of the problem for me – bookshelves work fine. Large quantities of flat materials, of all different sizes and materials, however, present a problem for me. Do you employ plain or “flat file” cabinets? Do you invest in climate/humidity control? Of course the answers vary with the material being stored – is there a seminal book on how to store such materials? I’m sure your collection dwarfs my own – what’s your approach to managing your materials?