This vintage educational library book, Vandercook Etudes for Cornet or Trumpet Technique, is a must-have for any intermediate level musician. Written by Hale A. Vandercook and published by Rubank Publications, this paperback book is 12 inches in length and 9 inches in width, with 40 pages of content focused on improving technique for cornet, trumpet, and baritone instruments. The book is a valuable resource for anyone looking to improve their skills on their brass instrument, with a focus on developing a strong foundation in technique. It is a great addition to any musician's collection and is sure to be a useful tool in achieving their musical goals.