Other yarns suitable for this design can be found by searching here:

Yarndex

Wise Needle

Google

Yarn - Wool, etc.
Araucania: Nature Wool

Ashford Tekapo:
New Zealand wool

Baabajoes: 10 ply

Brown Sheep: Nature Spun Worsted
or
Superwash Worsted

Cascade:
Cascade 220
or
Cascade 220 SuperWash

Debbie Bliss:
Cashmerino Aran
or
Merino Aran

Elann: Peruvian Collection Pure Alpaca
or
Peruvian Highland Wool

Filatura di Crosa: 127

Filtes King: Extra

Jaeger: Matchmaker Merino Aran

Knitpicks: Andean Silk or
Woolof the Andes

Lion Brand : Wool or
Woolease

Patons: Decor

Plymouth: Encore or
Galway

Unger: Utopia

Yarn - Cotton, etc.

Debbie Bliss:
Cotton Denim Aran

Elann: Four Seasons Roma

Knitpicks: Shine Worsted

Lion Brand: Cotton Ease

Plymouth: Fantasy Naturale

Not associated in any way commercially with companies mentioned :)

AS ALWAYS : swatch first to make gauge...

...please send me any and all yarn suggestions - anybody tried the TLC Cotton Plus at this gauge?