This interesting series of 15 titles was published between 1908 and 1926. The text of the books is taken totally from titles of the same name in the Young People’s Library, Format 3. Thus, the confusion about what series the volumes belong to and when they were published.
See Boy and Girls Classics (new)
During the years of publication there were 8 different large linen swatches (cut into book sizes) used as covers. The cover above is the most commonly seen and was placed on books in the 1908-early teens era. These books were boxed.
Below see the entire linen swatch that this cover was taken from.