Jack H. Tod published an entire book on A History of the Electrical
Porcelain Industry in the U. S. (1977)...covering all sorts of electrical
parts - made of porcelain; unfortunately he does not go into makers of
fuses....so that wouldnt help Kris probably.  But for those who want a copy
of this reference, Elton Gish may still have a few copies available. ??
http://www.insulatoremporium.com/Books/ep.cfm

Here's a website with references for porcelain insulators...but again, I
don't think it includes fuses.
http://www.nia.org/archives/referenc.htm

Don't know where to find info specifically on such fuses.  Sorry.

At 05:06 PM 6/14/2004 -0700, you wrote:
>Kris,
>There is a small section on electrical porcelain insulator marks in:
>Lehner, Lois
>1988    Lehner's Encyclopedia of U.S. Marks of Pottery, Porcelain & Clay.
>Collector Books, Paducah, KY.
>Lehner credits Mr. Tod as the compiler.