The monogram is the combined initials of both Ernest and Grace Thompson Seton.
In the note to the reader, Ernest Seton Thompson writes: "The public has not fully understood the part that Grace Gallatin Seton-Thompson does in my work. The stories are written by myself, and all the pictures, including the marginals, are my own handiwork ; but in choice of subject to illustrate, in ideas of its treatment, in the technical book-making, and the preliminary designs for cover and title-page, and in the literary revision of the text, her assistance has been essential."