Portret van de acteur Sophus Petersen als Nils Krogstad in Een poppenhuis before 1880

This 19th-century cabinet card photograph by J.A. Schulz depicts Danish actor Sophus Petersen in character as Nils Krogstad from Henrik Ibsen's play *A Doll's House*. The image captures Petersen in a dramatic pose, holding a document and gazing intensely at the viewer. This photographic portrait is a fascinating glimpse into the world of late 19th-century theater, highlighting the role of acting in bringing literature to life.