A treatise on heliochromy: or, The production of pictures, by means of light, in natural colors. Embracing a full, plain, and unreserved description of the process known as the hillotype, including the author's newly discovered collodio-chrome, or natural colors on collodionized glass ... by L. L. Hill ...
Hill, Levi L b.1816.
Find attached windows text files in two sections as Book 1 and Book 2 of above book.
Mustafa Umut Sarac