435 West Fullerton Avenue
Elmhurst, Illinois 60126-1404


Tel:     630-279-7171
Fax:    630-279-7676

  © 2018 Advent Systems, Inc. All rights reserved. 

A.C. Nielsen

A.T. Kearney Inc. Worldwide


Adler University

Advocate Health Care


Amalgamated Bank of Chicago

American Access Casualty

American Bar Association

American Imaging Management

Amita Health

Arkansas Game & Fish Commission

AT&T Broadband

Aux Sable Liquid Products

Bahai Temple

BlueCross BlueShield



Briar Hall

Brunswick Corporation (Illinois & Michigan)

CCC Information Services

Central Arkansas Water

CES Educational Services, LLC

Chamberlain Group

Chicago Stock Exchange

Chicago Sun-Times

Chicago Tribune

City of Aurora

City of Rochelle


College of American Pathologists

Columbia College

Concordia University

Cook County Juvenile Detention Center

Crowe Horwath

Dental Network of America

DuPage County

Elgin Community College


Federal Reserve Bank

Follett Higher Education

Fourth Presbyterian Church of Chicago

Fresenius Medical Center

Gift of Hope


Golden Grain / Quaker Oats


Hanover Park Police Facility

Harold Washington Library Center

Havi Global


HSBC - North America

Huron Consulting

IBEW Local 134

Illinois Holocaust Museum

Indian Prairie School District 204



Intel Corporation


John Buck Realty Management

Joint Commission on Accreditation of Healthcare Organizations (JCAHO)

Jones Lang LaSalle


Kraft Foods, Inc.

Little Rock National Airport

Locke Lord Bissell & Liddell, LLP

Lurie Children's Hospital

Marriott Renaissance

Mayer, Brown, Rowe & Maw, LLP

McDermott, Will & Emery, LLP

McDonald's Corporation

Mead Johnson

Mesirow Financial

Metropolitan Life

Municipality of Downers Grove

Municipality of Elk Grove

Municipality of Hanover Park

Municipality of Lisle

Municipality of Niles

Municipality of Oak Brook

Municipality of Oak Park

Municipality of Palos Park

Municipality of Romeoville

Municipality of Schaumburg

Museum of Contemporary Art



NorthShore University Health System (NSUHS)

Northwest Community Hospital

Northwestern Medicine

Northwestern University

Oswego Community Unit District 308

The Pampered Chef

Prince of Peace Catholic Church

​Riverside-Brookfield High School

Ronald McDonald House

Rush University Medical Center

Sachnoff and Weaver

Salvation Army

Shirley Ryan Ability Lab

Silver Cross Hospital

Society of Thoracic Surgeons

Spertus Institute of Jewish Studies

St. Charles School District 303

Superior Ambulance

Swedish Covenent

James R. Thompson Center (IDCMS)

Treehouse Foods, Inc.

Tribeca Flashpoint Academy

U.S. Department of the Navy, Great Lakes

U.S. Equities Realty, Inc.

Union Tank Car Company

United Way

Unity Junior High School

University of Chicago

University of Chicago Medical Center


VA Jesse Brown Medical Center

Verizon Wireless

Virchow Krause & Company

VW Credit

Westin O'Hare

Westinghouse High School

Winston & Strawn, LLP


Wm. Wrigley Jr. Company


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Our clients range from small businesses to blue chip corporations. No matter what its size, each of our clients receives the same dedication and personalized service. We're proud to have earned the trust and loyalty of our clientsmany of whom have been with us for decades.