is there an easy place online to find the identity of a shipper/
importer using thier case mark ( on the cardboard box the merch is
shipped in)as an identifier.

example the letters T.C.B. inside a diasmond or the numbers 26
directly over the numbers CB inside a square belong to a company
called 26 california bazzar out of Vernon, California

I would prefer an online source but a book or catalog would be fine.

It looks as though the mark you are refering to is the front mark or
lead mark, showing the buyer or importer's information. The mark is
created by the seller or importer, thus is not constant for a given
company, and is often designed to be inconspicuous:
http://www.export911.com/e911/prod/shipMark.htm

The lead mark can be enclosed in any shape (triangle, diamond, etc.)
or without enclosure, unless otherwise specified by the buyer.

For security reasons---to avoid being the target of pilferage---avoid
using the full company name as it is too conspicuous. Better yet, use
letters or numbers that are unrelated to the company name, such as the
purchase order (P.O.) number. Buyers such as chain stores, may want
their P.O. number and department or store number to appear in the
shipping marks.

This site explains how this particular company decides the mark for each shipment:
http://www.panwaychina.com/faq.asp

Shipping Mark
" If not specially requested by customers on or before our packing, we
will stencil the shipping mark at our fixed format, Following is the
example:

Front Mark Explanations
A.B.C. ...Abbreviation of your esteemed company
KF740912 ...Customer's P/O number or our S/C number
1/500 ...Carton numbering

mdel-ga 
thanks for the info.  My goal is to find the original importer of
products I have purchased from another supplier.
kimberscorner