According to the website JewishGen.org, approximately 1 million former Soviet Union Jews were evacuated or fled themselves to Uzbekistan and neighboring areas before the German troops entered their cities. They estimate as many as 300,000 deportees perished from disease and starvation, while some died in the line fire serving their country.
152,000 registration cards have been digitized and a database has been made available with names and digital images of the registration cards of those that arrived in Tashkent between 1941-1942.
This is the registration card for my great-grandmother, Raisa and her girls, Luba and Sofia. How incredible that these were preserved and made available to view!