Directories in Illinois were made in a joint venture with R. H. Donnelley.
Prior to brand standardization by SBC Communications, Ameritech directories were published under the PagesPlus brand.
Ameritech Publishing's operations in Illinois and northwest Indiana were placed in a partnership with R. H. Donnelley, called DonTech, in 1999.
In 2012, Ameritech Publishing (along with the rest of AT&T Advertising Solutions) was spun off into YP Holdings.
This article about a United States publishing company is a stub.