Or HaGanuz LaTzadikim, "Compiled from books and from holy writers… with explanations of Chassidic conduct and proper character traits which are clarified in the books of tsaddikim…", by R. Aharon HaCohen of Apta. Zhovkva, 1800. First edition. Approbation by the Magid of Koznitz.
The book was printed about four years after the printing of the Tanya by the Admor HaZaken of Chabad, R. Shneur Zalman of Liadi. The author, a leading Chassidic tsaddik, bases his composition on the Tanya in many places and cites the Tanya in almost every passage.
R. Aharon HaCohen of Zelichow and Apta (Encyclopedia L'Chassidut, Vol. 1, p. 157) is the author of Keter Shem Tov which contains anthologies of the teachings of the Ba'al Shem Tov and the siddur Yeshara-Keter Nehorah. This book, Or HaGanuz LaTzadikim, was first printed anonymously.
[64] leaves. 18 cm. Overall good-fair condition. Stains and minor wear. Worming, affecting text in several places. Several leaves are cut on the border of the text. New binding.
For further information on the book, see: C. Lieberman, Ohel Rachel. NY 1980, Vol. 1, pp. 7-11.
Stefansky Chassidut, no. 22.