Sorry for the ignorance, but I don’t know who does or maintains this cool blog: Sketch Club, though the info they provide is pretty clear about what they do:
After lunch, Sketch Club identifies a person of interest, usually for their unique or distinct characteristics. The subject is briefly studied without drawing. Once back from lunch and back at the drawing board, the subject is drawn from memory.
I say they, because it seems it’s several people contributing to the blog, as the signatures in the sketches are different. Anyway, it’s a cool blog to visit and subscribe, though it doesn’t seem to be updated very often.









