Q: This is a book that is in my wife’s family, The Tent on the Beach. There is no copyright or any date for that matter. Can you help?

A: Your book is part of the Slip in the Pocket Classics Series. It was published in the 1909-1915 time range.

Originally it was published with a dust jacket. An example is shown below.

Because this title is a reprint with little collector interest, it only has nominal value.