Found -- this rather unusual author's notice in a copy of the 1885 edition of George Long's translation of Marcus Aurelius' Meditations. It is printed where the frontispiece should be. A little digging reveals the following.
The first edition of Long's translation was published in 1862. By 1864 a pirated edition appeared by Ticknor & Fields, Boston. Long's notice appeared first in the 1869 British 2nd edition published by Bell & Daldry, London, and was still appearing several printings later in 1885.
Long's consideration of a Confederate dedication to a pirated Union publication is an excellent example of being politely very rude, and his opening paragraph pure stoicism!
[Submitted by P.Hatcher / Many thanks]