NARA II, COLLEGE PARK, MD
For a broad look at this collection of records, check the Guide to the Captured German and related records on microfilm at the National Archives website.
Look for the following categories:
Collection of Foreign Records Seized
National Archives Collection of Foreign Records Seized (Record Group 242)
Microfilmed Records Received from the Berlin Document Center
Einwandererzentrale. Microfilm Publication A3342, Series EWZ. 7,320 rolls.
The Four Parts of the EWZ Collection:
EWZ 53, Antrage, contains the naturalization applications of Germans who resided in the Baltic states prior to World War II (Latvia, Lithuania and Estonia). 73,000 on 587 microfilms
EWZ 56 contains the “racial” assessment of Germans who resided in USSR, Romania, Poland, Baltic states, Yugoslavia, France, Bulgaria, and Sud-Tirol.
EWZ-57 contains the Einwandererkartei (Immigrant Card) and Gesundheitskartei (Health Card). Sometimes it is called E/G Kartei. 2.9 million cards in phonetic order on 1964 microfilms.
EWZ 58 contains the Stammblätter (pedigree chart). (Sometimes this is a repeat of the EWZ 57 files.) 1 million forms on 742 microfilms.
FAMILY HISTORY LIBRARY
The Family History Library purchased the Einwanderer (index card) and the Stammblätter (family group sheet.) The Family Search Catalogue entry has an excellent description of the Einwanderer and the Stammblätter collections.
To find an individual, one first goes to the Einwanderer, the (mostly) alphabetized index card, to find the case file number, also called the Control Number, of the individual. Then the researcher uses the case number file to locate the Stammblätter, the family group sheet, which usually has up to three generations of the family listed.
A recent search showed that many of these are now digitized and due to contracts and privacy issues of living persons are now available at Family History Centers and their affiliates, but not on your home computer.