Frank Pugno, Bil Curry (2005-11-03). "LOWREY ORGANS". Electronic Organs (theatreorgans.com/hammond/keng/kenhtml/electronicorgans.htm). VintageHammond.Com.
"In 1956, the Glide, a foot switch located on the left side of the expression pedal, was introduced, permitting the effects of a Hawaiian guitar "glide", the smear of a trombone, the glissando of singing strings and the effect of a calliope. The Glide dropped the pitch of the organ about a semi-tone and cancelled the vibrato. / In 1961, Lowrey's first home organ with a built-in Leslie speaker appeared as the Holiday Deluxe Model LSL. Automatic Orchestra Control, later renamed Automatic Organ Computer, came on the scene in 1963. / Fig. 2 – Holiday Deluxe Model LSL"
