The book "Gorgonopsidae from the North Dvina excavations of V. P. Amalitsky" is a fundamental scientific study devoted to gorgonopsids - extinct predatory therapsids discovered during excavations under the guidance of Professor V. P. Amalitsky in the North Dvina River basin. The author of the work is paleontologist P. A. Orthodoxy. Bibliographic data: Author: P. A. Pravoslavlev Name: Gorgonopsidae from the North Dvina excavations of V. P. Amalitsky Publisher: Publishing House of the USSR Academy of Sciences Year of publication: 1927 Series: Severo-Dvina excavations by prof. V. P. Amalitsky, issue III edition. 900 copies Contents: The book describes in detail the skeletal remains of Gorgonopsid found in the Northern Dvina excavations. Particular attention is paid to two almost complete skeletons mounted and exhibited by Professor Amalitsky in St. Petersburg at the beginning of the 20th century. Both specimens were designated Inostrancevia Alexandri Amal. Other finds are also considered, including skulls and scattered bones belonging to the same species. The publication contains phototypical tables and illustrations prepared by Amalitsky. Features and value: This publication is of considerable value for specialists in the field of paleontology, historians of science and collectors of rare scientific works. It reflects the stage of development of domestic paleontology and contains primary descriptions of unique finds from the Northern Dvina excavations. The limited circulation and age of the publication make it rare and in demand among collectors.