Mastering and cutting studio located in Chicago, Illinois (USA), and owned by Malcolm Chisholm. Lacquers which were cut there can be derived from an etched CSM on the run-out grooves. The S of CSM may appear as a thinner⎰than the other letters and can be mistaken for the letter F. Please add the company with a ‘Lacquer Cut At’ role. Not to be confused with Columbia Santa Maria pressings.