letter of manumission, letter of enfranchisement, manumission papers
free woman, freedwoman
Помещик дал старому слуге вольную.
The landowner gave his old servant his letter of enfranchisement.
В архиве нашли вольную, подписанную в 1850 году.
In the archives, they found a letter of enfranchisement signed in 1850.