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Who We Include

Leadership Directories, Inc. (LDI) provides high-quality contact information for the leaders of major United States government, business, professional, and nonprofit organizations. Our company goal is to research, compile, verify, and produce the most current and accurate contact data available for the institutional leadership of the United States, and offer it to our subscribers in the format that best suits their needs.

Leadership Directories publishes fourteen Yellow Books and two court directories, each a specialized directory of a particular area of American activity. As a whole, the collection is known as The Leadership Library®, a unique database of over 750,000 contacts at over 150,000 organizations. The information contained in this database is available to our subscribers in print, online, on demand, and as lists or datafeeds. Leadership Directories content may also be accessed through distribution partnerships with select technology and content companies.

Changes to The Leadership Library® are verified and updated daily by our content teams in NY and DC.


Browse to see what's included in Leadership® Online: Organizations / People