inside lower cover in graphite: 86 / [?]NRD / 8637/
Ruth Cole Kainen (RK stamp on first free endpaper), Washington, DC; gift to NGA, 2012.
- Modern German Prints and Drawings from the Kainen Collection, National Gallery of Art, Washington, DC, 2014.
- Dube, Wolf-Dieter. E.L. Kirchner: das graphische Werk. Munich: 1980, undesc.