Becky - Is this man your local photo friend? I would love to hear about what he found about his emulsion making, but there is a little chunk of rich information from WW2 intelligence reports... including complete formula for Agfa Brovira, Brovira braun extra hard, Lupex (chloride paper), etc. as well as a few negative formulae. Many bits of later tricks are found in patent literature. Each patent may list zillion potentially useful compounds, thousand preferred compounds and dozen more preferable compounds for each agent, with a bit of thinking and experimentation I find things that work well for my goal... Ryuji ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.