Depending on the title of the book, individual editions of from the The Little Leather Library Corporation series have a value in the range of 10.00-20.00. If sold in lots the individual rare book value goes down a bit to around 4.00-6.00...count the number in your particular set and you will have the rare book value. Condition will make the difference between a 4.00 or 6.00 example.
The series today are somewhat collectible, The Little Leather Library Corporation of New York was the first company to mass-market inexpensive books in the United States. The corporation was founded in 1916 and made available a wide variety of classics by authors such as Rudyard Kipling, Henry Wadsworth Longfellow etc. There were 101 books in the full collection that were bound in imitation leatherette. They were published between 1920 and 1924. (Only the first two editions were bound in real leather..these would be worth a but more - c.35.00)
When first published, the little books were sold at the Woolworth's chain. By the early 1920s, the books were advertised in popular magazines, selling in National Geographic from 1922 to 1924.References note that they were even found in cereal boxes every once in a while. It became the Modern Library Publishing Company after 1924.
The books are not rare today but large collections are not common. A good size set might sell better individually but I would encourage you to try to sell them together first for the integrity of the series.
Best wishes, Dori
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