Houghton Mifflin issued two distinct variants corresponding to the British 5th printing.
The earlier variant (5a) is constructed in a similar style to the subsequent American printings of the second edition. That is, the title page states “Houghton Mifflin Company – Boston, The Riverside Press – Cambridge”, and the book lacks the printing history and colophon entirely. Even so, the sheets for the text body came from A&U and thus are identical to the British 5th printing.. – (https://en.wikipedia.org/wiki/Early_American_editions_of_The_Hobbit#The_second_edition)
- Bound identically to the British impressions. Green with mountains and dragon bordering
- 18.0 mm paper weight
- 12.7 x 19.0 cm
- 315 numbered pages
- 1000 copies printed