The Duchesse d'Orleans, commonly though incorrectly styled the Princess of Bavaria, was known to have maintained a very extensive correspondence with her relations and friends in different parts of Europe. Nearly eight hundred of her letters, written to the Princess Wilhelmina Charlotte of Wales and the Duke Antoine-Ulric of Brunswick, were found amongst the papers left by the Duchess Elizabeth of Brunswick at her death, in 1767. These appeared to be so curious that the Court of Brunswick ordered De Praun, a Privy Councillor, to make extracts of such parts as were most interesting. A copy of his extracts was sent to France, where it remained a long time without being published.
In 1788, however, an edition appeared, but so mutilated and disfigured, either through the prudence of the editor or the scissors of the censor, that the more piquant traits of the correspondence had entirely disappeared. The bold, original expressions of the German were modified and enfeebled by the timid translator, and all the names of individuals and families were suppressed, except when they carried with them no sort of responsibility. A great many passages of the original correspondence were omitted, while, to make up for the deficiencies, the editor inserted a quantity of pedantic and useless notes. In spite of all these faults and the existence of more faithful editions, this translation was reprinted in 1807. The existence of any other edition being unknown to its editor, it differed in nothing from the preceding, except that the dates of some of the letters were suppressed, a part of the notes cut out, and some passages added from the Memoirs of Saint-Simon, together with a life, or rather panegyric, of the Princess, which bore no slight resemblance to a village homily.
A copy of the extracts made by M. de Praun fell by some chance into the hands of Count de Veltheim, under whose direction they were published at Strasburg, in 1789, with no other alterations than the correction of the obsolete and vicious orthography of the Princess.
In 1789 a work was published at Dantzick, in Germany, entitled, Confessions of the Princess Elizabeth-Charlotte of Orleans, extracted from her letters addressed, between the years 1702 and 1722, to her former governess, Madame de Harling, and her husband. The editor asserts that this correspondence amounted to nearly four hundred letters. A great part of these are only repetitions of what she had before written to the Princess of Wales and the Duke of Brunswick. Since that period no new collections have appeared, although it is sufficiently well known that other manuscripts are in existence.