The Log Cabin Press published the paperback Log Cabin Series. I believe that this series was published in the early 1920’s and consisted of more than fifty books.
Note that the Cleopatra book states Log Cabin Library on the title page. It is unclear to me what distinguishes the “Series” from the “Library”.
As of this time the following Abbott books are known to be part of this list:
Josephine mistakenly gives the author as Jacob not John S. C. Abbott.
Here are the pictures of the 1847 Otis, Broaders and Company Inquiries Concerning the Intellectual Powers and the Investigation of Truth.
For more information, see Non Series Inquiries Concerning the Intellectual Powers and the Investigation of Truth.
Here is a new cover for the W. B. Conkey Company Rollo Series.
For more information, see http://www.jacobabbott.com/RT/publishers/conkey.html
O. A. Browning and Co., Toledo (Copyright 1878 Goodspeed)
For more information, see Non Series New Testament.
The Jonas Series- Clark and Maynard 1864
For more information, see http://jacobabbott.com/JS/index.html