I am looking for a particular website in which you type in your
postal/zip code, followed by the title of a particular book you are
searching for. The site then provides a list of local university and
public libraries that house it, along with the dewey decimal number of
the book. I have used this website before, but have lost the address,
I am uncertain of the search terms needed to find it.

Hi josine1833,

I'm confident you are looking for the OCLC (Online Computer Library
Center) WorldCat. Their homepage is here:

OCLC:
http://www.oclc.org/

It has taken me some time to post an answer for you because I've just
discovered that the OCLC has recently undergone some changes. It is
membership-based and not that long ago, the only way to access it,
without being a member, would've been to use one of the partner
websites.

However, there is something new: WorldCat Pilot, making it possible to
actually use a search engine to access the OCLC!

"A Web user who uses Yahoo! Search, Google or other search sites to
locate a particular item may be pointed to a library that owns the
item based on records in WorldCat, the world's most comprehensive
bibliographic database."
http://www.oclc.org/worldcat/pilot/

Here is how using a Google search:

Type the title of the book and tack on <site:worldcatlibraries.org> to the end.
For example, let's say you want to find a book about air conditioning. Type this:

air conditioning site:worldcatlibraries.org

On the results page, click on one of the "Find in Library" links.
On the next page, type in your state or zip, and click on a library to
view the dewey decimal number.

>>>>>>>>>>

Additional Links of Interest:

1) Antiquarian Booksellers' Association of America:
http://www.abaa.org/

Click "Advanced Search"
Type "fuller" in the author field.
Type "air conditioning" in the title field.
Next, click on the "Find it in a library" button.
Next, click on one of the titles that come up.
Type in your state or zip.

2) Research Libraries Group: RedLightGreen (RLG):
http://www.redlightgreen.com/ucwprod/servlet/ucw.servlets.UCWController?USERID=anonymous&PASSWORD=------&ACTION=logon&SRCHPATH=3&referrer=

Search for > air conditioning fuller.
Click on one of the titles.
Click on "Get it at your local library".
Type in your city.

>>>>>>>>>>

I hope this helps and you'll soon be finding books at your local
library. If you have any questions, or if the OCLC isn't what you are
looking for, please post a clarification request before closing/rating
my answer and I'll be happy to reply.

Thank you,
hummer

No Google search was required as I use the OCLC often myself.