Anna Katharine Green'sThree Thousand Dollars (1910).

Anna Katharine Green, from
The Reader (June 1907)

The tumblr site of the Digital Public Library has posted a cover of Anna Katharine Green's Three Thousand Dollars (1910) as an example of early-20th-century book cover design. The book is about, according to the Woman's Home Companion that serialized it, "the romantic adventures of a beautiful girl and the problem of a secret safe."