Columbia Recording Studios, Chicago

One of Columbia's key recording studios. During CBS Inc.'s ownership of Columbia, the label's Chicago studios were situated wherever the network's radio and television stations (WBBM-AM/FM/TV) were located. Prior to 1956, the studios were located at the Wrigley Building, then after 1956 they were located at 630 North McClurg Court. Also referred to as "CBS Studios, Chicago". The following matrix prefixes indicate 'Mastered At' Columbia Recording Studios, Chicago: ZTSC - 7" 45 RPM Mono ZCSV - 7" 45 RPM Stereo prior to 1969 ZTSV - 7" 45 RPM Stereo after 1969 ZTEC - 7" 45 RPM EP Mono XCTV - LP 33 1/3 RPM Mono XCSV - LP 33 1/3 RPM Stereo