Molly Bawn, by The Duchess [Margaret Wolfe Hamilton, (1855?-1897)]. New York: Hurst and Company. No date. Original pub 1878.
Ca. 1890, based on binding style. According to New General Catalog of Old Books and Authors, it was originally published 1878. The Lucille Project lists Hurst and Company active dates (1871-1919).
According to Wikipedia, Molly Bawn is The Duchess’s best known novel and makes an appearance in James Joyce’s Ulysses.
This novel is also credited as having the earliest version of “Beauty is in the eye of the beholder,” although the character who says it “quotes” it.
“The cousin! I am so glad. Anything new is such a relief. And I have heard she is beautiful: is she?”
“Beauty is in the eye of the beholder,” quotes Marcia, in a low tone, and with a motion of her hand toward the open door inside which sits Molly, that sends Lady Stafford up-stairs without further parley.
Thanks to the anonymous Post-processor!