graphite pencil, watercolor, paper, cardboard
casein tempera, casein emulsion, paper, cardboard
charcoal pencil, watercolor, gouache, paper, cardboard
watercolor, paper, cardboard
casein tempera, casein emulsion, paper, cardboard
casein tempera, casein emulsion, walnut ink, gum arabic, paper, cardboard
graphite, walnut ink, chinese ink, gouache, paper, cardboard