Use the EDGAR Company Filings tool to search for companies by name or ticker symbol. Look for the Form 10K, which is the company's annual report (compiled by external auditors), as well as Form 10-Q (Quarterly Report) for information on financial prospects and risks. Annual reports from 1994-present are often available.
Columbia Historical Corporate Reports Online Collection offers digitized annual reports for about 50 New York City-based companies. Selected corporations in the digital collection include department stores, utility companies, banks, and railroads ranging from the 1850s through the early 1960s.