Publication date from N-Y Tribune 1888-10-06 p8, listing as one of two Appleton "publish this day" (which confirms the data: series #1, paper cover, 40 cents).
The full text and images of this edition are available at The HathiTrust Digital Library.
(That is a digital copy of the 1993 Ohio State University "facsimile on permanent/durable paper".)
-- Contents, p[5]-6
-- novel spans p[7]-230
-- publisher catalogue, 12 unnumbered back pages
The inside front cover, "Appletons' Town and Country Library", describes and lists #1-15 in that series. The inside and outside back cover features "The Gainsborough Series".
