Wyspiański mostly worked in pastels, but used other media at times. Besides art, he also wrote poetry and plays, doing all this at as fast a pace as he could manage in his last years, knowing he was doomed to an early death.
The 1907 drawing was done not long before Wyspiański died.
Mehoffer was another artist with Kraków roots.
Juel led a short, wild life, as can be read here.
I assume this is the same woman, painted three years apart.
Here he elaborates on an earlier drawing.
Most of the images I found in Google Images have colors as in the first image. But the lower image seems more natural. I suppose numbers prevail, but thought I'd present both points of view.
Cartoon for a proposed stained glass window (never executed).