"From the Picture ""Good News""; Martha Tilton with Orchestra and Vocal Quartet. Digitized from a shellac record, at 78 revolutions per minute. Four stylii were used to transfer this record. They are 3.8mm truncated conical, 2.3mm truncated conical, 2.8mm truncated conical, 3.3mm truncated conical. These were recorded flat and then also equalized with Turnover: 500Hz, Rolloff: 1590Hz. The preferred version suggested by an audio engineer at George Blood, L.P. is the equalized version recorded with the 3.3mm truncated conical stylus, and has been copied to have the more friendly filename. Matrix number: T12991-1-2 PR Catalog number: 1176 The recording on the other side of this record was also digitized ."