The following databases will help you find industry information:
Industry reports in S&P NetAdvantage
Industry reports in LexisNexis Academic
ABI/INFORM Complete has the Dun and Bradstreet publication FirstResearch, which does the reports for Hoover's. The most efficient way to search is to use the keywords for your industry AND FirstResearch. Find the appropriate quarterly report.
Industry Norms and Key Business Ratios: Located on the table behind the reference desk. Call number #HF5681.R25 I525 (this is the easiest one to use, so I recommend using this one). Find your industry by SIC code.
RMA Statement Studies: Reference books in the reference room. Located on the table behind the reference desk. Call #HF5681.B2 R6. Find your industry by the NAICS code.
Almanac of business and industrial financial ratios: Located same as above books. Call number #HF5681.R25 A45.