The aim of research, whether manual or online, is to insure that advertising dollars are being spent wisely to reach the right people at the right time at the lowest cost. With more data available every day, the challenge facing media planners is to find the right sources needed to construct and evaluate media campaigns using all available media outlets.

This directory is an update of the media resources companies that offer special discounts to 4A's members; most offers are good until Dec. 31, 2014. (Please note that individual companies provide details of services and discount listed.)