CliffsNotes
CliffsNotes (formerly Cliffs Notes, originally Cliff's Notes and often, erroneously, CliffNotes) are a series of student study guides available primarily in the United States. The guides present and explain literary and other works in pamphlet form or online. Detractors of the study guides claim they let students bypass reading the assigned literature. The company claims to promote the reading of the original work, and does not view the study guides as a substitute for that reading.
CliffsNotes was started by a Nebraska native named Cliff Hillegass in 1958. He was working at Nebraska Book Company of Lincoln, Nebraska, when he met Jack Cole, the co-owner of Coles, a Toronto book business. Coles was also the publisher of a series of Canadian study guides called Coles Notes. Jack Cole offered the American rights to Hillegass.
Hillegass and his wife, Catherine, started the business in their basement at 511 Eastridge Drive in Lincoln, with sixteen William Shakespeare titles. CliffsNotes now exist on hundreds of works. The term "Cliff's Notes" has now become a proprietary eponym for similar products.