I looked at 2 Latex mattresses at Jordan's, a New England furniture store.  I was somewhat impressed that they listed at least some detailed information about the Latex on the tags.  Also, the sales person was very helpful.

The first was a mattress made by Nature's Rest, a company supposedly located in Massachusetts.
The specs were:  about $2200
Quilted layer
     Organic cotton; 1 ounce Jona wool; antimicrobial fiber
     3/4" Talalay layer 19 ILD
     3/4" Talalay layer 19 ILD
Comfort Layer
     3" Dunlop  24 ILD
Support Layer
     6" I-core 32 ILD (said to be Dunlop)
     shoulder channels
     7/8" 1.45 Density Foam (said to just to cushion the platform)
Box Spring has 1/2" 1.45 density foam on top of wood foundation

The second was by Natura's mattress (but not organic) about $2400
Quilted layer
     Cotton blend cover; 18 ounce smartwool
     1" quilt flex (some kind foam)
Comfort layer
     2" Talalay latex 32 ILD 60/40 blend
     2" top has it's own zipper and is removable
Support
     6" all natural Dunlop
Foundation
     slatted whit pine


Any thoughts on these two mattresses would be great. 

JohnS