Scope and Content From the Collection: The James Murray Barbour collection contains correspondence with numerous individuals, most notably with Gladys Watson Tipple, whose enthusiasm for dividing the musical scale into 53 intervals led to a year-long correspondence and the creation of a template slide rule. The collection also contains Barbour’s article for MGG (Musik in Geschichte und Gegenwart) and the preparatory work for that article, as well as numerous reviews and articles in the original journal issues. Other material...