Here is NRA's list, not only of companies, but also not-for-profit groups and celebrities (unfortunately, no citations of what actions they took):
http://nraila.org/research/19990716-AntiGunGroups-002.html
Scan halfway down for the companies.
Citigroup / Citibank is on here, so it appears complete. Here are the companies, per that site:
"Anti-Gun Corporations/Corporate Heads
The following listing includes the most prominent national corporations that have lent their corporate support to gun control initiatives or taken position supporting gun control.
A & M Records
Al Cafaro, Chrm. & CEO
595 Madison Avenue
New York, NY 10022
(212) 826-0477
www.amrecords.com
Record Production, Entertainment
American Century Companies
James E. Stowers, CEO
4500 Main St., 4th Floor
Kansas City, MO 64111
(816) 531-5575
www.americancentury.com
Mutual Fund & Stock Investment Company on NYSE
American Multi Cinemas Entertainment, Inc.
Stanley H. Durwood, Co-Chairman, CEOPeter C. Brown, President, CFO
106 West 14th Street, #1700
Kansas City, MO 64141
(816) 221-4000
www.amctheaters.com
Movie Theater Company
Argosy Casino
H. Steven Norton, President, CEO
777 N.W. Argosy Parkway
Riverside, MO 64150
(816) 746-7711
www.argosycasinos.com/
Gambling Casino Company
Ben & Jerry's Homemade, Inc.
Bennett R. Cohen Chrm. & CEO
Rte. 100, Box 240
Waterbury, VT 05676
(802) 244-5641
www.benjerry.com
Ice cream and frozen yogurt
BJC Health Systems
Fred L. Brown, President & CEO
4444 Forest Park Ave.
St. Louis, MO 63108
(314) 747-9322
www.bjc.org/
Healthcare Ccompany
Blue Cross Blue Shield - Kansas City
John P. Mascotte, President
P.O. Box 419169
Kansas City, MO 64141
(816) 395-2222
Healthcare Ccompany
Brooks Investments-Robert Brooks
Robert Brooks
45 Chesterfield Lakes Road
Chesterfield, MO 63005
Investment Company
Carter Hawley Hale Stores, Inc.
Philip M. Hawley, Chrm. & CEO
444 South Flower Street
Los Angeles, CA 90071
(213) 620-0150
Retail clothing and accessories stores
Citigroup Inc.
Sanford I. Weill, Co-Chairman and Co-CEO
John S. Reed, Co-Chairman and Co-CEO 399 Park Ave.
New York, NY 10043
(212) 559-1000
fax (212) 793-3946
Toll Free: (800) 285-3000
www.citi.com
Banking, Insurance, Financial Services, Real Estate
Crown Central Petroleum Corp.
Henry A. Rosenberg, Jr.
One North Central Street Box 1168
Baltimore, MD 21203
(301) 539-7400
Refiners and marketers of petroleum products, convenience stores
Development Specialists - Chicago
70 W. Madison Street, #2300
Chicago, IL 60602
(312) 263-4141
Earthgrains - St. Louis
8400 Maryland Ave.
St. Louis, MO 63105
(314) 259-7000
www.ironkids.com/Pages/Earthgrains.html
National Bread Company
Faultless Starch/Bon Ami - Kansas C
Gordon T. Beaham, III and Nancy Beaham
1025 West 8th Street
Kansas City, MO 64101
(816) 842-1230
www.magicsizing.com/about.html
National Clothing Starch Company
GEICO Indemnity Co.
One GEICO Plaza
Washington, D.C. 20076-0032
(301) 986-2500
www.geico.com
Property Insurance
General American - St. Louis
Richard A. Liddy, CEO
P.O. Box 396
St. Louis, MO 63166
(314) 843-8700
www.genam.com
Life Insurance
Hallmark Cards
Irvine O. Hockaday, President & CEO
P.O. Box 418307
Kansas City, MO 64141
(816) 274-5111
www.hallmark.com
Greeting Card Company
Health Midwest
2316 East Meyer Boulevard
Kansas City, MO 64132
(816) 751-3000
www.healthmidwest.org
National Healthcare Company
ICN Biomedicals
Adam Jerney, Chrm. & CEO
3300 Hyland Avenue
Costa Mesa, CA 92626
(714) 545-0113
www.icnbiomed.com
Pharmaceutical products
James B.Nutter Co. - Kansas City
James B.Nutter
4153 Broadway
Kansas City, MO 64111
(816) 531-2345
Investment Banker
Kansas City Chiefs
Lamar Hunt, Owner
One Arrowhead Drive
Kansas City, MO 64129
(816) 924-9300
www.kcchiefs.com
Pro Football Team
Kansas City Royals
David Glass, CEO
P.O. Box 419969
Kansas City, MO 64141
(816) 921-8000
www.kcroyals.com
Pro Baseball Team
Kenneth Cole
152 W. 57th Street
New York, NY 10019
(800) 536-2653
www.kennethcole.com
Clothing retailer
Levi Strauss & Co.
Robert D. Haas, Chairman
Philip Marineau, CEO
Peter A. Jacobi, President and COO
1155 Battery St.
San Francisco, CA 94111
(415) 501-6000
FAX (415) 501-3939
www.levistraus.com
Clothing
Mallinckrodt, Inc. - St. Louis
C. Ray Holman, President & CEO
675 McDonnell Blvd, Box 5840
St. Louis, MO 63134
(314) 654-2000
www.mallinckrodt.com
Clothing Starch Company
Maritz, Inc. - St. Louis
William E. Maritz, Chairman & CEO
1375 N. Highway Drive
Fenton, MO 63099
(314) 827-4000
www.maritz.com
Corporate Travel & Research Company
Michael Douglas Foundation
3550 Wilshire
Los Angele, CA 90010
MNC Financial, Inc.
Alfred Lerner, Chrm.
Ten Light Street Box 987
Baltimore, MD 21203
(301) 244-5000
Banking, financial services
Sara Lee Corporation
Sara Lee Foundation
Three First National Plaza
Chicago, IL 60602-4260
Phone: 312-726-2600
www.saralee.com
Fax: 312-726-3712
Schnucks Markets
Craig D. Schnuck
11420 Lackland Road
St. Louis, MO 63146
(314) 994-9900
www.schnucks.com
Grocery Stores
Silver Dollar City
Peter Herschend
One Corporate Drive
Branson, MO 65616
800 475-9370
www.silverdollarcity.com
Amusement Parks
Site Oil Company - St. Louis
Alvin J. Siteman, President
50 S. Bemiston
St. Louis, MO 63105
(314) 725-4321
Oil Company
Southland Corporation
Masatoshi Ito, Chrm.
2711 North Haskell Avenue
Dallas, TX 75221
www.7-eleven.com
Convenience stores
Southwestern Bell Telephone- St. Louis
One Bell Center
St. Louis, MO 63101
(314) 235-9800
www.swbell.com
Telecommunications Firm
Sport & Health, Inc.
Don Konz, CEO
1800 Old Meadow Rd.
McLean, Virginia 22102
(703) 556-6556
www.sportandhealth.com
Health clubs and fitness centers
Sprint Corp PAC
William T. Esrey, Chairman, President & CEO
2330 Shawnee Mission Parkway
Westwood, KS 66205
913 624-3000
www.sprint.com
Telecommunicaitons Firm
SSM Health System - St. Louis
477 N. Lindbergh
St. Louis, MO 63141
(314) 994-7800
Healthcare Ccompany
St. Louis Cardinals
William DeWitt Jr., Controlling Owner
250 Stadium Plaza
St. Louis, MO 63102
(314) 421-3263
Pro Baseball Team
St. Louis Rams
Georgia Frontiere , Owner
One Rams Way
Earth City, MO 63045
(314) 982-7267
www.stlouisrams.com
Pro Football Team
St. Louis University
Rev. Lawrence Biondi, President
221 N. Grand Blvd.
St. Louis, MO 63103
(314) 977-2222
www.slu.edu
Private Catholic University
Stoneyfield Farms Yogurt
Mr. Gary Hirshberg, CEO
10 Burton Drive
Londonderry, NH 03053
(603) 437-7594
Yogurt
Sverdrup Corp.
Richard E. Beumer, Chairman & CEO
13723 Riverport Drive
Maryland Heights, MO 63043
(314) 436-7600
www.sverdrup.com
Engineering Firm
Time Warner Inc.
Gerald M. Levin, Chrm. & CEO
75 Rockefeller Plaza
New York, NY 10019
(212) 484-8000
www.pathfinder.com/corp/
Publishing, film and music recordings
Unity Health - St. Louis
1650 Des Peres Road #301
St. Louis, MO 63131
(314) 909-3300
www.smhs.com/unityheath.html
Healthcare Ccompany
Working Assets
Peter Barnes, Founder
701 Montgomery Street
San Francisco, California 94111
(415) 788 0777
www.workingassets.com
Long distance telephone service"
[This message has been edited by Jeff Thomas (edited February 25, 2000).]