PIP: A Photo-Interpretive Program for the Analysis of Spark-Chamber Data* An operating computer program that processes photographically recorded data is described. The input to the program consists of spark-chamber photographs on which tracks of high-energy particles are recorded. The program automatically scans, measures and performs the preliminary interpretation of these photographs. In continuous operation a processing rate of 5,000 photographic frames per hour is achieved. CACM June, 1963 Rudloe, H. Deutsch, M. Marill, T. CA630624 JB March 14, 1978 9:59 AM 825 5 825 825 5 825 825 5 825