Commercial Services
NOTE: This list is primarily devoted to businesses that specialize in the repair and transfer of outdated/obsolete sound media types like cylinders and platters though they may also provide other transfer and repair services. This list does not purport to be exhaustive. To have a provider added to this list, please e-mail its name and web address to: codell@loc.gov.
Adolph Thal Audio Engineering (ATAE)
afthal@gmail.com
Airshow Mastering
http://www.airshowmastering.com 
Archival Sound Lab
http://www.cuttingarchives.com/
ATR Services, Inc.
http://www.atrservice.com
The Audio Archive, Inc.
http://www.TheAudioArchive.com
Audio Transformation
http://audiotransformations.sawneybean.com/
AudioVisual Preservation
http://www.avpreserve.com
Gary Barclay
jazzverbatim@gmail.com
George Blood Audio
http://www.georgebloodaudio.com/
Bluefield Mastering, Inc.
http://www.bluefieldmastering.com
BMS/Chace LLC
http://www.bmschace.com
George Brock-Nannestad
gbn.av@image.dk
Adrian G. Cosentini
acosentini@juno.com
Chace Audio
http://www.chace.com/
Chicago Audio Works
scott.smith@chicagoaudio.com
Creative Audio Works
http://www.creativeaudioworks.com
Cube-Tec International GmbH
http://www.Cube-Tec.com
The Cutting Corporation
http://www.cuttingarchives.com
DeNoise.com
http://denoise.com/
Encore Consultants
encore@atdial.net
H. Duane Goldman
http://www.discdoc.com
Richard L. Hess
http://www.richardhess.com
Historic Masters, Ltd.
http://www.historicmasters.org
Clark Johnsen
ClarkJohnsen@lycos.com
Ira H. Kemp/Cylinder Systems, Inc.
danger@bway.net
Michael F. Khanchalian
mfkhanchalian@juno.com
Mahern Archival Preservation
http://www.mahernarchival.com
MasterDigital Corporation
http://www.masterdigital.com
The MediaPreserve
http://www.themediapreserve.com
Millennia Music and Media Systems
http://www.mil-media.com
Karl F. Miller, DMA
info@restorationaudio.com
Mystery Street
http://www.mysterystreetrecording.com/rates/format-transfers-audio-preservation-and-archiving/
Graham Newton
http://www.audio-restoration.com
Mark Obert-Thorn
TransfrGuy@aol.com
Osiris Studios
http://www.osirisstudio.com
Patrych Sound Studios
http://www.patrych.com
Douglas Pomeroy
pomeroyaudio@att.net
James R. Powell, Jr.
http://www.gramophoneadventures.com
Preservation Technologies, L.P.
http://www.ptlp.com
Charles A. Richardson
charlesrichardson@comcast.net
Rootlike Technologies, Inc.
http://www.rootlike.com/
Safe Sound Archive
http://www.safesoundarchive.com
Jon Samuels
recordedlegacy@yahoo.com
Seth B. Winner Sound Studios, Inc.
SethBWinner@optonline.net
Sirensound Digital (UK)
http://www.sirensound.com/
Smolian Sound Studios
http://www.soundsaver.com
Soundcurrent Mastering
http://www.soundcurrent.com
STiL Casing Solution (Canada)
http://www.stilcasing.com
Michael N. Stosich
http://www.esotricsound.com
Gene Tognacci
gtognacci@houston.rr.com
Tom Fine Custom Recording
tom.fine@gmail.com
Tuscan Corporation
http://www.tuscancorp.com
Vidipax, Inc.
http://oldvidi.sbcontract.com/profile.htm