The Danish Artist Bertha Wegmann Painting a Portrait, Jeanna Bauck
On Google Art Project. High resolution downloadable version on Wikimedia Commons. Original is in the Nationalmuseum Sweden.
Swedish Artist Jeanna Bauck (about whom there is frustratingly little on the web) painted her friend, fellow artist and studio-mate Bertha Wegmann in the act of painting a portrait.
In addition to the human subjects, Bauck’s studio interior is one of those wonderful interior paintings that is a cornucopia of still life subjects within the larger composition, much like the studio interiors of William Merritt Chase.
The Google Art Project page gives historical background on this painting. Wegmann, in turn, painted this portrait of Bauck a few years later.