The Alkek Library has purchased online access to multidecade runs of Mergent Manuals. This includes Industrial, Unlisted, Public Utility, International, Transportation, Over the Counter and Bank and Finance.
Mergent Industrial manuals cover most of the 20th century through today and list a corporation's financials, stock splits and dividends. Also included is a corporation's subsidiaries, acquistions and a brief corporate history.
The other categories are also as detailed with the information appropriate to their field.