I recently finished reading and translating an article by M.A. Saburova on medieval Russian garb. This article, published in 1997, provides an excellent overview of literature which had been written up to that date, and a collection of materials from a multitude of sources and various archeological finds. It also provides some very interesting and well-done drawings reconstructing that medieval Russian garb in the pre-Mongol period may have looked like, based on archeological excavations and 19th-20th century ethnographic studies. This is a great resource about the fabric, clothing, jewelry, embroidery, and footwear from various regions in medieval Rus'.