Search: Use CLICsearch to perform a basic keyword search. Once you find a relevant book or two, look within those records for promising subject headings: click on one of them to perform a new search on that term to find more. Be sure to browse the shelves in the area where you find a promising book.
Browse the Shelves by Library of Congress Classifications: the following Library of Congress classifications may be useful when browsing at the O'Shaughnessy-Frey Library for books on economics. The 'H' call numbers in Economics are on the second floor. Anything labeled as Reference will be in that collection on the ground floor.
Searches full text of books, providing full access to public domain works, or previews of books still in copyright.