Houghton International
Madison & Van Buren Avenues
PO Box 930
Valley Forge, PA 19482-0930
Phone: (610) 666-4000
Fax: 610-666-0174
Email: info@houghtonintl.com
For ordering material, please contact Customer Service at
custserv@houghtonintl.com
or fax to: 610-666-0174