Fourth edition of a photographer's personal portfolio. Images made with historical and alternative photographic processes, including Platinum/Palladium, Cyanotype, Printing-Out paper, Lith print, Vandyke print, Gum Bichromate, Lumen print, Anthotype, Salted paper, Wet plate collodion, Daguerreotype, and more. The author is a Finnish photographer and instructor, known for his work and research on alternative photographic processes.