If you want to learn more about the history of Displaced Persons, then read Mark Wyman's book, DPs: Europe's Displaced Persons, 1945-1951.
To get a picture of how people who fled the Baltic states coped, check out Agate Nesaule's remembrance, A Woman in Amber: Healing the Trauma of War and Exile, or her fictional work, In Love with Jerzy Kosinski: A Novel.
The exceptional documentary, Red Terror on the Amber Coast, chronicles the occupation of the Baltic States by the Soviet Union.
You also may find this personal account of exile moving.