hope you have given your family story to yad vashem and holocaust museum.
would klara be interred with her children? have you checked obits?
already used jewishgen and family search?
do you know where in usa your relatives lived?any helpful info you can provide as it is somewhat vague .
New York, Passenger Lists, 1820-1957
about Josef Katzenstein Name: Josef Katzenstein another relative or error?
Arrival Date: 3 Oct 1940
Birth Date: abt 1880
Birth Location: Germany
Birth Location Other: eschircye
Ethnicity/ Nationality: Hebrew
Friend's Name: Henry Kasten
Port of Departure: Liverpool, England
Port of Arrival: New York, New York
Ship Name: Scythia
Search Ship Database: Search the Scythia in the 'Passenger Ships and Images' database