Mattress Forum

I think this is the forum I looked at years ago...(8 to 10 years ago).  At that point I found a post that listed links to places to get materials to make your own mattress.  We ended up buying a piece of talalay latex from the site mentioned.  It was a very good price and has worked very well for us.  We are thinking of putting a guest bed in our house and would like to buy another piece of this latex but I can't find the site.  Does anyone have any info on where the best priced Talalay Latex slabs can be found?  Thank you for any information.