1001 Fannin  
ABM Janitorial Services   
Amegy Bank      
American Liberty Hospitality / Embassy Suites Hotel & Alden Hotel
Andrews Kurth LLP
AT&T
Baker Botts
Ballard Exploration Company, Inc.
Bank of America  
Bank of Texas       
BG Group    
BMS Management, Inc.
Bracewell & Guiliani LLP
Brookfield Properties
Caddell & Chapman 
Camden
Cameron Management
CBRE
CenterPoint Energy    
Chevron Corporation
Chinatown CDC   
Columbia Property Trust, Inc.   
Comcast Business Class     
Crescent Real Estate Equities, LLC       
Crown Castle International        
D.E. Harvey Builders
Deloitte
Duncan Interests
EaDo/East Downtown Management District 
Ernst & Young    
Everett Interests
ExxonMobil Corporation
Fayez Sarofim & Co.
Federal Reserve Bank-Houston    
Four Seasons Hotel
Frost Bank
Fulbright & Jaworski L.L.P.
Gardere 
Gensler
Gilbane Building Company
Greater Houston Convention and Visitors Bureau
Greater Houston Partnership          
Griffin Partners   
Haynes and Boone, LLP          
Haynes Whaley Associates     
Hess    
Hilcorp Energy Company          
Hilton Americas-Houston          
Hines       
Houston Center    
Houston Chronicle       
Houston Downtown Alliance       
Houston Dynamo
Houston Endowment Inc.   
Houston First Corporation    
Houston Livestock Show and Rodeo
Houston Rockets
Houston Trust Company
Hyatt Regency Houston
Jackson Walker, L.L.P.
Jones Lang LaSalle
JPMorgan Chase & Co.    
Kinder Morgan   
King & Spalding
KPMG LLP
Landry's, Inc.
Locke Lord LLP
M Architects         
Macy's      
Main Bell Realty Corp.   
Mayer, Brown        
MC Management & Development, Inc.   
Midway Companies   
Morris Architects
PageSoutherlandPage
Palmetto Partners, Ltd.
Pillsbury Winthrop Shaw Pittman LLP   
Plains All American Pipeline    
Plains Exploration & Production Company  
PM Realty Group
Porter Hedges LLP    
PricewaterhouseCoopers LLP    
Project GRAD USA    
Reliant, an NRG Company              
Russell Reynolds Associates     
Shell Oil Company      
Skanska      
South Texas College of Law
Spencer Stuart
Spire Realty Group, Inc.
St. Joseph Medical Center      
Stewart Title   
Sullivan Group   
Tarantino Properties Inc./ Commerce Towers
The Finger Companies       
Thompson & Knight LLP     
Trammell Crow Company     
TransCanada        
United Airlines            
University of Houston Bauer College of Business           
University of Houston-Downtown
Vinson & Elkins   
W.S. Bellows Construction      
Walter P Moore
Waste Management, Inc.
WEDGE Group Incorporated     
Weil, Gotshal & Manges LLP     
Wells Fargo      
Winstead PC
Wortham Foundation, Inc.