Q: Hello, I am inquiring about the value of this book, “The House of Seven Gables”, Altemus, Philadelphia. The illustration is dated 1899. Please advise.

A: Your book is part of the Petit Trianon Series and was published in 1899. During this year the books all had the same pattern on the left side of the cover. The right half of the cover had numerous floral designs or decorative patterns.

See http://henryaltemus.com/series/series143.htm

Because it is a reprint of a widely available title, it is worth only a few dollars.