moscow print yard was first mentioned in "aufzeichnungen über den moskauer staat" by heinrich von staden. it is known to have published "lenten triodion", "triodion in pictures", "gospel", "psalter", and other books, which didn't have any imprints (hence, another bookish name of the print yard - anonymous printing house). on march 1 of 1564, ivan fyodorov and pyotr timofeyev (mstislavets) published the very first dated book called "apostle" (апостол) at the moscow print yard. in 1565, the printing house published "chasovnik" (часовник, or book of hours) and then "psalter" (1568).