attributions through cross-referencing various material. One example would be this card at the link below:
http://www.caribbeanchipguide.com/showpic.php?pic=pix/pro/procormisc3.jpg

The card helped to establish where the Tropicoro chips were from. Also, a pair of dice that I found were able to be attributed
to the same hotel through the cross-referencing of non-chip material.
Full casino link with all the extras below:
http://www.caribbeanchipguide.com/chip2.php?primarykey=PROCOR&sort=type

I feel is is valuable to have the various material all together in order to have a more complete overview of the history.
I think the above link with only (two chips) would not give a fair example of the casino.

I like stuff...

Westen