Company Research: Market Share and Rankings

Business Rankings Annual
Online. Using Advanced Search, limit Content Type to "Rankings."  

Forbes.com: Lists
Online.

Fortune.com: All Fortune Lists
Online.

Gary Price's List of Lists
Online.  Collection of free and fee-based online rankings.

Mainebiz Book of Lists
Print. Provides 33 lists of rankings of different Maine industries.  Table of contents (pdf).

Mergent Industry Review 
Print.  Company rankings within 74 industries.  Updated twice yearly.

Special Issues Index
Online.  Maintained by the James J. Hill Reference Library

TableBase (via AlacraStore)
Online.  Table data from over 900 business publications.  Hosted by the fee-based website AlacraStore.  Limited search options.  Result citations provide date, journal title, and table title.