Словарь древнерусских личных собственных имен
[Dictionary of Ancient Russian Personal Names]

Saint Petersburg: Tipografiia I. N. Skorokhodova, 1903.
[Available in a reprint under the title: Tupikov, Nikolaj Michailovich. Worterbuch der Altrussischen Personennamen. Cologne: Bohlau Verlag, 1989.]

The mother of all Russian name books (some 857 pages of mostly pre-1600 names). This book is broken into three sections: masculine names, feminine names (only four pages!) and patronymics -- all arranged alphabetically. It is as reliable as a secondary source can be expected to be. So far, only the masculine and feminine given names sections (about 465 pages) have been entered into this Dictionary.