CISTI Document Delivery
(Canadian Institute for Scientific and Technical Information)
http://cisti-icist.nrc-cnrc.gc.ca/docdel/docdel_e.shtml

CTRC - Colorado Technical Research Service
http://www-libraries.colorado.edu/ps/ids/ctrc/frontpage.htm

Cadence Group
http://www.cadence-group.com/

Cal Info
http://members.aol.com/calinfola/retrieve.htm

Capitol District Information
http://www.capitoldistrict.com/

Carolina Library Services
http://www.intrex.net/carolib/default.htm

DocDeliver
http://www.docdeliver.com/

F.Y.I.
http://www.colapublib.org/
fyi/city/doc_del/index.html

FIND/SVP
http://www.findsvp.com/

FirstSearch
http://www.oclc.org/firstsearch/

ISI Document Solution (IDS)
http://ids.isinet.com/

Infocus Research Services
http://www.infocus-research.com

Information Express
http://www.ieonline.com/

Information Prime NA
http://www.infoprime.com/

Information Resource Services (IRS)
http://www.librarianoncall.com/

Infotrieve
http://www.infotrieve.com/

Instant Information Systems (www.DocDel.com Sponsor)
http://www.docdel.com

Kessler-Hancock
http://www.khinfo.com/brochure.html

MITS (Michigan Information Transfer Source)
http://www.lib.umich.edu/mits/

NYPL Express (New York Public Library)
http://www.nypl.org/express

Purdue Technical Information Service
http://www.purdue.edu/tis

Research Associates
http://www.researchassociates.com/
Default.htm

Research Investment
http://www.researchinvest.com/document_delivery.htm

TDI Library Services, Inc.
http://www.tdico.com/services.html

Teldan Information Systems
http://www.teldan.com

UW Libraries Research Express Service
http://www.lib.washington.edu/
Resxp/request.html