Novr 18. /58
My dear Sir
All my glass pictures are accurately fitted to the frames of my two large stereoscopes; and it would be much more expensive to alter them than it would be for you to have a new copying frame made. I therefore should not like to have the pictures reduced. When I last called upon Mr Heath <2> he said he intended to send you a proper frame. I have no objection to your separating the glasses.
I think one of the most immediately profitable applications of your new art <3> would be to the production of stereoscopic pictures, for which there exists now an immense sale. Upwards of 3000 glass slides for the small stereoscopes have been published in Paris which are sold at prices varying from 8s/ to 12s/ each; even these pictures, already existing
prod reproduced by your art they might be sold at 6s/ per dozen each, and would, I have no doubt meet with a considerable sale. There would be no expense beyond the transfer of the pictures and printing of the plates.
My large stereoscope, far superior as it is to the others, has never become popular on account of the expense of the pictures. Were they reproduced by your method, I have no doubt that if some optician <sic> to take it up he would find it to answer his purpose.
Have you made any of the complementary pictures of the stereoscopic slides; if you have I should like to try them.
Yours very truly
2. Vernon Heath (1820–1895), photographer & author
3. photoglyphic engraving