First, is the monogram used to sign some of the artwork, incorporating the artist's name:
Don-Margery, Schoolgirl (1928) by Mary Gervaise:
Here is the cover and an interior plate from John and Topsy (1926), by Sibyl B. Owsley:
And finally, here is one illustration from Collins’ Fairy Folks’ Annual (1925):
More details about the issue of Wormwood containing the associated article can be found here.