The series editors are Robert L. Hubbard, Jr. and Bill T.
[1] The NICOT covers all 39 books of the Old Testament with the exceptions of Exodus, 1 & 2 Kings, 1 & 2 Chronicles, Esther, and Daniel.
The original hardcover editions published during the 1970s through 1990 were characterized by a distinctive dark gray cloth binding with a scarlet field and gold lettering on the spine, and the individual volumes were approximately 5.675 inches (14.41 cm) in width, 8.75 inches (22.2 cm) in height, and of variable thickness.
Beginning in c. 1993, the hardback editions (including revised and/or second editions) have been characterized by a light-tan cloth binding with dark blue lettering on the spine, and the individual volumes are approximately 6.25 inches (15.9 cm) in width, 9.5 inches (24 cm) in height, and of variable thickness.
Christianity Today magazine included the series in a list of the more significant publications and achievements of Evangelicalism in the latter half of the 20th century.