Frech, Timm: Do It Yourself Stencil Instructions on Cigarette Cards, in Blanché, Ulrich (Ed.): Stencil Stories: A Stencil History of Street Art / Geschichte des Schablonen-Graffiti, Heidelberg: heiBOOKS, 2022 (Universitätsmuseum Heidelberg: Kataloge, Volume 15), p. 30–35. https://doi.org/10.11588/heibooks.994.c13536