All photos on this site Copyright © 2001-2008 Doug Netzke (Canada) unless otherwise stated below. Please
CD 494 ISOREX photo credited to Bill Meier, United States.
CD 421.1 AGEE, and CD 1058 AGM photos credited to Brett Bidwell, Australia.
Insulator profile drawings scanned from the Guide to Insulators From Outside North America (GIFONA) and Price Guide, by Marilyn Albers and N.R. Woodward. Information on the Australian glass insulator manufacturers also taken from the Guide to Insulators From Outside North America.
Insulator grading guidelines information taken from the NIA website. CD numbering system information also gathered from the NIA website, www.insulators.com website and the Price Guide books.
CD number categories and other CD information was taken from the Glass Insulator Reference website, the Price Guide for North American Glass Pin-Type Insulators and the GIFONA Price Guide.
All other logos and icons used are copyrighted by their respective owners and/or companies.
Assorted graphic elements used on this site graciously lifted from websites all over the world.
If I have used a photo or image on this site that you hold copyright to, and you would like me to remove it or credit you, with the particulars and I will be glad to comply.