Armstrong Ceiling Products
http://www.armstrong.com/commceilingsna/

USG Ceiling Products
http://usg.com/products/ceiling/index.jsp

Celotex Products
http://www.us.bpb-na.com/index2.html

Ceilings Plus - Specialty Products
http://www.ceilingsplus.com/

Acoustical Wall Panels - Lamvin
http://lamvin.com/

Whisperwalls Stretch System - Wall and Ceiling Panels
http://www.whisperwalls.com/

Wall Panels - Tectum
http://www.tectum.com/

Wood Ceilings - Rulon
http://www.rulonco.com/

Guilford Frabric Color Chart
http://www.acousticalsolutions.com/products/fabrics/pop_guilford_cc.asp