Last summer I weeded about 500 volumes from our collection. They were mostly extra copies (1 to 4 of them) of books that were once important, but we now need only one copy. Another category was books of supporting interest which no longer fit with our holdings but once were requested by faculty; those I transferred to wherever their classification normally put them. Being out here in the wild west, I do feel an obligation to keep superseded editions of directories, building codes, etc., but in your area, with the Smithsonian Libraries, etc., I would keep no more than two or three years of any directory. Someone having need for information older than that probably would have time to call or visit another location. We don't yet have a great space problem, but next time I weed I will also evaluate each book for quality. There are many older books which have built no reputation for themselves and are therefore highly unlikely to be used again - and if someone does want one, there's always Interlibrary Loan. And some books just look worthless anyway. We were lucky and could check the last 12 years of circulation records - which did cause me to return a few books to the shelf. BERNA E. NEAL Architecture/Environmental Design Library, ASU, Tempe, AZ 85287 (602) 965-7422 [log in to unmask]