Advertisers through R.H. Donnelly now will also gain distribution on parts of Yahoo's network, reports ClickZ.

A deal between Donnelly and Yahoo expands an existing one to put Donnelly advertisers on Yahoo's featured, enhanced and business listings, the latter also on Yahoo Maps. Fewer Yahoo sites were included in the previous deal.

Donnelly's sales staff will sell ads on both Donnelly and Yahoo sites. The deal covers 14 Western and Midwest states, where Donnelly operates a Dex-branded directory service.