Tatar-speaking groups of the population of Azerbaijan and Dagestan profess three different religions: Islam, Judaism, Christianity, while having a single language (with some dialect differences), common material and spiritual cultures, customs and traditions. This collection contains materials about tatas of the Jewish faith, their ethnic group, life, traditions, prominent figures. The materials of the collection were collected by Mikhail Matatov, one of the researchers of the ethnic origin of the Tats-Judaists.