Today I am adding a dust jacket picture of the earlier Format 2 book in this series. It was published starting in 1915.
When this book was first published in 1914, the dust jacket was brown and uncoated.

For more information see: http://www.henryaltemus.com/series/series11.htm

Books #2-6 were first published in 1919 and this later dust jacket is shown below.