Lerner Publishing Group
Macmillan Publishing Co.
Marshall Cavendish / Benchmark
Mazer Corp.
McDougal Littell & Co.
McGraw-Hill
McGraw-Hill Higher Education
McGraw-Hill/Interamericana (Spain)
McGraw-Hill School Division
Microsoft Corp.
Millbrook Press
National Geographic Society
Nature Conservancy
Newbridge Communications, Inc.
Newsweek
New York Times Library
Nick Falletta Associates
Open Society Institute
Pacific Press Service (Japan)
Pearson Education, Inc.
Pearson Education Asia PTE LT
Photolibrary.com
Preface
Prentice Hall Book Publishers
Prentice-Hall College Division
Prentice-Hall Photo Archives
Prentice-Hall School Division
Publiphoto
Running Press Publishing Co.
Saunders College Publishing
Scholastic, Inc.
Science Photo Library
Scott Foresman-Addison Wesley
Sierra Pacific Resources
Silver Burdett & Ginn
Southwestern Company
Spektrum (Germany)
SRA/McGraw-Hill
Paul Singer Design
The Nature Company/Walker Comp
The Photo Library
Tierbilder Okapia K.G. (Germany)
Top Photo Corp.
Wasdworth Publishing
Washington Post
Washington Post Library
West Educational Publishing
W.H. Freeman & Company
William C. Brown Communications
World Book Publishing
ZEFA (Germany)