21.59 cm W x 27.94 cm L
Three-page typed document titled “Artifical Pneumothorax Apparatus Developed By The Medical Staff Of Glen Lake Sanatorium.” Document describes how to use the pneumothorax case designed by medical staff of the Glen Lake Sanatorium and built by the carpenters there. Document notes that the case is for Glen Lake Sanatorium use only. The third page of the document is titled “Bill of Material for Pneumothorax Case” and lists the various types of materials needed to build the case, along with sizes and quantities of each.