I also have an old publication from the lime association on how to make different whitewash formulas, for different purposes. Email them, or me if you are involved with this. I feel that we should be encouraging the use of lime paints because of their vastly superior environmental qualities. They dropped out of favor purely for economic reasons - why buy a tin when for a little bit of effort you can make it yourself. Again a case where modern is not necessarily better -its just a way to make a quick buck.