Last Updated: Nov 06, 2016 Views: 56
We have historical information on Pyrex insulators. Are you able to visit the library to look at these? If so, we are open 9-5, Monday-Sunday and have a reference librarian during those hours to assist with research. The Museum cannot offer values or appraisals due to our non-profit status, but there are collectors' books and magazines that may be of interest to you. I'm listing a few below, but maybe even more productive would be to contact one of the collector's groups for insulators, such as Crown Jewels of the Wire. They publish a newsletter, where, for instance, this article on Pyrex carnival glass insulators appeared: http://cjow.com/archive/article.php?month=4&a=04Pyrex%20Glass%20Insulators.htm&year=1975
These groups typically do a lot of research on numbers, marks, dates, etc. and could save you some leg-work! If you do want to come in, let me know and I can pull some materials in advance of your visit. Hope this helps!
Berry, Bob. “A New Pyrex Insulator.” Crown Jewels of the Wire, v. 22, no. 11, Nov. 1990, pp. 14-15, ill.
Hafer, Greg. “Hey Dad! There's Gold on Them There Poles!”
Crown Jewels of the Wire, v. 32, no. 1, Jan. 2000, pp. 6-11, ill. Corning Pyrex insulators.
McClellan, Claire T. “More unusual finds.” Western Collector, April 1969, p. 201. Includes Pyrex insulators
McCurty, Jeff. A Closer Look at Corning-Pyrex Insulators. Insulators, v. 9, no. 10, Dec. 1977, pp. 4-11, ill.