The Petit Trianon Series was a series of reprints that was published between 1895 and 1910. In 1897 the covers of the books all had a stereotypical left sided pattern of triangular groupings of dots. On the right side there were various floral and decorative patterns. Today I am adding a new floral design for this format to the database.

Now there are fourteen different covers known. To see them look here: http://henryaltemus.com/series/series141.htm. It is unknown how many were published in total.