From the 1940s! This drug was to be used for Gallbladder visualization, answering the need for a better preparation since Graham and Cole first divised the technique of Cholecystography, Describes reliability, freedom from Gastro Reaction, Ease of administration, Optimal Shadow Density, Tolerance, and Simplicity of Routine, shows X ray illustration, also explains dosage and procedure, contraindications and packaging, some staining on covers of this brochure, Overall Good Condition! 4640