TDI distributes three types of publications:

• Our annual Blue Book, a national directory of individuals, businesses and organizations. The Blue Book is only available to TDI Members, register to become a member for full access to all of TDI’s offerings!
• TDI World, a quarterly magazine covering detailed background, news and related information pertaining to TDI efforts. Printed copies of TDI World are mailed to TDI Members. Become a TDI Member today to receive your subscription!
• eNotes, a monthly electronic newsletter summarizing our latest online postings. This is a free email subscription for anyone, covering the latest news from TDI’s website.

TDI has published a quarterly magazine called “The GA-SK News Magazine” since 1970. The magazine was renamed “TDI World” in 2007. All issues of TDI World can be found below.