Sheldon and Company was the only publisher of this series between 1864 and 1880. It reprinted the ten book series in a number of different formats. The covers are shown below with their title pages.

This was the earliest Sheldon book from 1864.

This format was published between 1866 and 1869.

	1866
1868

This format was a late 1869 book.

1870

1872

1873-1875

This format was published in 1878 by Sheldon.

This format was published between 1878 and 1880.