This edition of House
of the Wolf was published in 1899. This is clear because the copyright
on the picture is 1899 and the title page imprint is Henry Altemus
which indicates a pre-1900 publication.
The cover of this book is unlike any other series cover I have seen yet
the size of the book (6.5 x 4.5), the title page and the title of the
book are all indicative of a Altemus publisher's series book.
Originally the book had either a dust jacket or a box which would have
indicated the same of the series. Until I find one of those elusive
items, this cover will have to go into the unknown series section.