The month-end data begins in December 1925 for NYSE. The end-of-day data begins in 1962 for NYSE and AMEX and 1972 for Nasdaq. CRSP (the Center for Research in Security Prices) maintains the most comprehensive and accurate databases of standard and derived historical data for NYSE, AMEX and Nasdaq common stocks. It is maintained by the University of Chicago Graduate School of Business.
As well as descriptive information and the company financials, ORBIS contains further detail such as news, ratings and country reports, scanned reports, ownership and M&A data. You can choose to access the whole of ORBIS or the top 150,000, 750,000, or 4 million companies. The ORBIS database is also available under a simplified interface called MINT GLOBAL
The following tutorial describes how to find annual reports using ORBIS: