The Incredible Chord Finder is a 9 inch x 12 inch trade paperback textbook published by the Hal Leonard Corporation in 1986. It serves as a supplement to the Hal Leonard Guitar Method, focusing on chord and scale information for guitar players. Authored by Hal Leonard Corp. Staff, this education and music-related book contains 104 pages of essential information for musicians looking to expand their knowledge and proficiency in guitar chords and scales. With a compact size and informative content, this chord finder is a valuable resource for guitar enthusiasts.