I and some local acquaintances found that Rising's Stonehenge paper is an excellent all around alt process paper, great for platinum printing and cyanotypy, unimaginably cheap and readily available. Comes in WHITE!(nice), neutral(very nice) as well as grey, fawn(?) and cream. I find it everywhere in various sheet sizes and pads.

http://art-supplies.misterart.com/st...enge-Paper.htm