The initial application is made up of two parts:

1) One part must be sent to UDSKiOR.

Comprehensive information about this application can be found on the Website of the World Jewish Restitution Organization (WJRO), and the application can be found here.
An annotated guide is available here.

2) The second part must be sent to the Auschwitz Jewish Center (AJC), which will serve as a proxy. Since UDSKiOR will not mail any correspondence outside of Poland, AJC’s office in Poland will receive the correspondence, and then forward it to all applicants living outside of the country.

The proxy form is available on the WJRO Website here.