Old School Archives

Old School Archives are System Operator Training booklets from International Correspondence Schools - Various Titles, copyright Penn Foster, Inc. Used with permission. Also on our Google Drive.

ICS - Elementary Chemistry

ICS - Elementary Electrical Principles

ICS - Elements of Arithmetic

ICS - Heat

ICS - Hydromechanics

ICS - Mechanics and Machine Elements

ICS - Operation of Sewage Treatment Plants - Part 1

ICS - Operation of Sewage Treatment Plants - Part 2

ICS - Operation of Sewage Treatment Plants - Part 3

ICS - Operation of Water Treatment Plants - Part 1

ICS - Operation of Water Treatment Plants - Part 2

ICS - Operation of Water Treatment Plants - Part 3

ICS - Operation of Water Treatment Plants - Part 4

ICS - Sanitary Bateriology

ICS - Sanitary Chemistry

ICS - Weights and Measures