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Prager Family Collection

Identifier: LBIJER 372

Scope and Contents

The Prager Family collection contains four series of diverse documents, which relate mainly to Rabbi Dr. Isaac Prager and his son Dr. med. Joseph Prager. Most of the material is lectures, sermons and preaching of Isaac Prager, as well as lectures of his son Joseph Prager.

Series I contains personal documents of the Prager family, pertaining to Isaac, Julie, Joseph and Theodor.

Series II contains correspondence, mostly between Prager family members, including those of Isaac, Julie, Joseph and Theodor Prager, as well as of other relatives and friends.

Series III contains manuscripts of Isaac and Joseph Prager. Isaac Prager`s manuscripts originate mostly from Hannover, where he served as head of the Teachers Seminar (1870-1879), and from Kassel, where he led the local Jewish community in his capacity as district Chief Rabbi (1880-1905). The manuscripts of Joseph Prager are from the years 1904-1933 and address both spiritual-ideological and professional topics. They originate mainly from Breslau, Leipzig and Halle. Other collections focus on family correspondences, poems, genealogical information and other family belongings from the years 1863-1933.

Series IV contains clippings, photographs and various materials pertaining to the Prager family.


  • 1863-1998


Language of Materials

The collection is in German and Hebrew.

Conditions Governing Access

This collection is open to researchers.

Conditions Governing Use

The collection has been digitized.

Biographical / Historical

Rabbi Dr. phil. Isaac Prager was born 1847 in Lendzin (Ledziny), Oberschlesien. He was the son of Joseph Prager (1809-1885), who ran a soap factory in Lendzin, and of Charlotte, born Fernbach, and the grandson of Moses Prager, merchant. He attended the Jüdisch-Theologische Seminar in Breslau from 1868/69 until 1877 and submitted his dissertation in 1875. He became head of the Religionsschule Hannover in 1877 and in 1885 appointed district chief Rabbi in Kassel. He was also a member of the Hebrew Literary Society ‘Mekize Nirdamim’ in Kassel. He was married to Julie née Seegall (1858-1926), daughter of Rabbi Joseph Seegall. They had three children, Richard (1883-1945), who was an astronomer, Joseph (1885-1982), a psychiatrist, and Theodor (1892-1914), who died as a solider in the German Army in World War I. Isaac Prager died 1905 in Kassel.

Dr. med. Joseph Prager was born in 1885 in Kassel. He was a psychiatrist and a Zionist activist. He gave lectures and published essays and newspaper articles on psychiatric matters and on spiritual-ideological topics, mainly in Breslau, Leipzig, Halle, as well as in Palestine/Israel. He married Lotte (née Badt), and together they had three children. In 1932 he migrated to Palestine and settled Haifa, where he died in 1982.


43 Folders


The collection contains various documents pertaining to Rabbi Dr. Isaac Prager and his son the psychiatrist Dr. Joseph Prager.


This collection is arranged in 4 series.

  1. Series I: Personal documents of the Prager family; 1871-1998
  2. Series II: Family correspondence; 1864-1975
  3. Series III: Manuscripts; 1870-1933, undated
  4. Series IV: Various materials; 1890-1930, undated
Processed by LBI staff
© 2020
Language of description
Script of description

Repository Details

Part of the Leo Baeck Institute Repository

15 West 16th Street
New York NY 10011 United States