Those studies would have to explain why for 40 some years care packages (clothing, food items, small household goods, etc) sent from emigrees in the West to rel

Those studies would have to explain why for 40 some years care packages (clothing, food items, small household goods, etc) sent from emigrees in the West to relatives left behind in Soviet sphere were highly prized in the black market. I don't think there were any care packages sent the other way around from USSR to US.. Although my father did a brisk trade trading Soviet records for Western records via western penpals - eventually bartering enough Western records for the highly prized Lada car. - https://en.wikipedia.org/wiki/VAZ-2101 https://en.wikipedia.org/wiki/VAZ-2101