In illustrated paper wrappers in orange and black.
Illustration engraved by N. Orr Co.
"Prepared expressly for this series."
"Many of [the cover illustrations], apparently, were drawn by George G. White, although, as usual with this artist, they are not signed. Most of them were engraved by N. Orr."--Johannsen, A. House of Beadle and Adams and its dime and nickel novels, volume 1, pages 395-398.