Newspaper Ad Rates (State) http://www.gaebler.com/Newspaper-Ad-Rates.htm
Radio Ad Rates (State) http://www.gaebler.com/Radio-Ad-Rates.htm
Billboard Ad Rates (State by large Metro Areas from Clear Channel Outdoor)
OTHER:
IAB - A group of 500 companies that are responsible for selling 86% of online advertising in the United States. Reports on internet ad spending.
Lee Enterprises (Owns newspapers in the La Crosse River Valley Region) - circulation and ad rate data.
Advertising Age - Leading advertising and marketing magazine (with many types of reports).
Adweek - covers advertising and branding in all forms of media and publications.
BtoB - magazine for developing marketing strategies.
Sport Marketing Quarterly: SMQ - Quality research that advances the study and practice of sport marketing and is relevant to the professional interests of the sport marketing community.
ClickZ - ClickZ is the largest resource of interactive marketing news, information, commentary, advice, opinion, research, and reference in the world, online or off-. From search to social, technology to trends, our coverage is expert, exclusive, and in-depth.
(also of possible interest) -
Sports Market Place Directory (Reference GV744 S65): Who, What, When & Where of the Sports Industry.
Complete Television, Radio & Cable Industry Directory (Reference HE8689 C66 2013)