Ewers, Hanns Heinz. Srdce králů [The Hearts of Kings]. Prague: Trigon, 1991. Cover and 6 lithographs signed and dated 1990 by Michael Rittstein. Typo by Vladislav Zadrobílek. First book of the Topas series. No. A/B 25 of 200. Very good condition. Rittstein is a renowned expressive figurative painter who was a member of the pre-revolution unofficial groups 12:15 and Pozdě, ale přece of the late 1980s.