I must not have been on the list when you first posted your calo-query. I've
made a few attempts at calotype - never made a decent negative. I've used a
formula from Silver Sunbeam, from Hunt, and from one of the Arno reprints -
I'll check at home & get back to you; but I couldn't get any of 'em to work. I
used drawing paper - Strathmore; also tried a tracing paper (don't know the
brand) - not enough wet-strength. Please keep us posted on the fruits of your
research. Calotype is a process I've been strongly drawn to, and frustrated
by, for years. Good luck!
Allan Janus
NASARC07@SIVM.SI.EDU