Bactrian, the principal written language of pre-Islamic Afghanistan, was little known until the early 1990s, when more than 150 contracts, economic documents and letters, together with a few Buddhist texts, were acquired by collectors. Most of these were published by Nicholas Sims-Williams between 2001 and 2012 in three volumes entitled Bactrian Documents from Northern Afghanistan. The present article presents two additional documents which have come to light more recently, a receipt for a sum of ten dirhams and a letter from an otherwise unknown ruler of Rōb, modern Rui in the Hindukush mountains. The text and translation of the documents are accompanied by a discussion of their linguistic and historical significance.