Other
The Online Investor: Mergers & Acquisitions
A day by day summary of all of the acquisitions and mergers of publically traded companies in the American business world.
US Department of Justice
U.s. Department of Justice: Vertical Merger Enforcement Policy
Read a 1995 speech given by Steven C. Sunshine, attorney in the Anti-Trust Division, which explains the differences between vertical and horizontal mergers.
Other
U.s. Securities and Exchange Commission: Mergers
A brief description of a merger, and what you can expect if a company that you have invested in is part of a merger.
Other
Idea House: Clinton Administration Challenges Vertical Mergers
An article from 1999 defining "vertical merger" which explains the difference between Clinton's treatment of such mergers as compared to George H.S. Bush and Ronald Reagan in their administrations.