Not much is known about the artist C. Helsey, except that he illustrated the 1912 French spanking novel Les Humiliations de Miss Madge (The Humiliations of Miss Madge) by Aimé Van Rod.
The novel was later republished under the same name in 1923 with illustrations by Georges Topfer.
Les Humiliations de Miss Madge is available for trade here.
Smiles and Spanks, NaturallyGin.com
Smiles and Spanks 
The voluptuous charms and sweet facial expressions of Helsey’s endearing characters hold such an enduring appeal, much in the same way – for this foolish chap, at least – as the gorgeous Roger Benson collection.
Thank you so much, Miss Gin, for indulging our spanking sensibilities with your treasure trove of the finest art.