About MRL

• "Magnetic Reference Laboratory and the State of Reproducer Calibration", by Ralph Hodges, from db magazine, 1980 November.
• "Behind The Gear: Jay McKnight of Magnetic Reference Laboratory", by Alex Kostelnik, from Tape Op, Nr 52 (2006 Mar/Apr).
• Jay McKnight at Ampex, the rest of Alex Kostelnik's interview that was not used in the Tape Op article.
• Jay McKnight's Biography
• Jay McKnight's Wikipedia Page