Coverage of publications outside the UK and in non-English languages expands steadily until, in 1991, it occupies enough of the Guide to require publication in parts.

The Encyclopedia of Northern Kentucky is the authoritative reference on the people, places, history, and rich heritage of the Northern Kentucky region. The encyclopedia defines an overlooked region of more than 450,000 residents and celebrates its contributions to agriculture, art, architecture, commerce, education, entertainment, literature, medicine, military, science, and sports. Often referred to as one of the points of the "Golden Triangle" because of its proximity to Lexington and Louisville, Northern Kentucky is made up of eleven counties along the Ohio River: Boone, Bracken, Campbell, Carroll, Gallatin, Grant, Kenton, Mason, Owen, Pendleton, and Robertson. With more than 2,000 entries, 170 images, and 13 maps, this encyclopedia will help readers appreciate the region's unique history and culture, as well as the role of Northern Kentucky in the larger history of the Commonwealth of Kentucky and the nation. • Describes the "Golden Triangle" of Kentucky, an economically prosperous area with high employment, investment, and job-creation rates • Contains entries on institutions of higher learning, including Northern Kentucky University, Thomas More College, and three community and technical colleges • Details the historic cities of Covington, Newport, Bellevue, Dayton, and Ludlow and their renaissance along the shore of the Ohio River • Illustrates the importance of the Cincinnati / Northern Kentucky International Airport as well as major corporations such as Ashland, Fidelity Investments, Omnicare, Toyota North America, and United States Playing Card