Robert Prechter, Jr., president of Elliott Wave International, resurrected the Wave Principle from near obscurity in 1976 when he discovered the complete body of R.N. Elliott's work in the New York Library. Robert Prechter, Jr. and A.J. Frost published Elliott Wave Principle in 1978. The book received enthusiastic reviews and became a Wall Street bestseller. In Elliott Wave Principle, Prechter and Frost's forecast called for a roaring bull market in the 1980s, to be followed by a record bear market. Needless to say, knowledge of the Wave Principle among private and professional investors grew dramatically in the 1980s.