One of the longest relationships between an advertiser and an agency is ending after 96 years as the Chevrolet division of General Motors cuts its remaining ties with Campbell-Ewald in Warren, Mich., part of the Interpublic Group of Companies.
One of the longest relationships between an advertiser and an agency is ending after 96 years as the Chevrolet division of General Motors cuts its remaining ties with Campbell-Ewald in Warren, Mich., part of the Interpublic Group of Companies.