Via Wicked Knickers.

A handful of hair in one hand, a brutal whip in the other, and a happy penis (with unhappy girl) in the middle:

Via Spanking Blog.

This looks like something straight out of the Marquis de Sade. A debauched monk or friar whips one poor girl while another sits between his knees polishing his knob:

The artist is Aroldo Bonzagni (1887-1918).