IC Industries Inc.

IGA Inc.

IMC Global (see International Minerals & Chemical Corp. )

Illinois Bell Telephone Co.

Illinois Central Railroad (Corporate History)

Illinois Steel Co. (see U.S. Steel Corp. )

Illinois Tool Works Inc.

Independent Grocers' Alliance (see IGA Inc. )

Interlake Steel Corp. (see Acme Steel Co. )

International Harvester Co.

International Minerals & Chemical Corp.

Itel Corp. (see Anixter Bros. Inc. )