ISA-International Sign Association http://www.signs.org/default.aspx
USSC-United States Sign Council http://www.ussc.org
MSA-Midwest Sign Association http://www.msassn.org/
COSA-Central Ohio Sign Association http://www.cosa-signs.com/
UL-Underwriters Laboratories http://www.ul.com/global/eng/pages/
ICSC-International Council of Shopping Centers https://www.icsc.org/index.php
AKZO NOBEL http://www.akzonobel.com/