SHILDER, N.K. Imperator Pavel Pervyi [Emperor Paul I; an historico-biographical Study]. St Petersburg: A.S. Suvorin, 1901. Large 8vo (288mm. x 195mm.), plates, some colour. (Some stitching weak). Original brown morocco stamped in gilt and blind (rubbed); Imperator Aleksandr Pervyi [Emperor Alexander I; his Life and Reign … second edition]. St Petersburg: A.S. Suvorin, 1904-05. 4 vols., large 8vo (280mm. x 198mm.), plates, some colour, illustrations in the text. (Some stitching weak). Original half maroon morocco and green cloth stamped in gilt (spines faded, extremities slightly worn); Imperator Nikolai Pervyi [Emperor Nicholas I; his Life and Reign]. St Petersburg: A.S. Suvorin, 1903. 2 vols., large 8vo ( 285mm. x 200mm.), plates, some colour, illustrations in the text. Original maroon morocco-backed marbled boards (extremities rubbed, upper hinges broken); Graf Eduard Ivanovich Totleben; [his Life and Work, a biographical Study]. St Peterburg: Russkaia Skoropechatiia, 1885-86. 2 vols., 8vo (230mm. x 145mm), folding maps, some torn at folds. (A few leaves loose). Contemporary brown half morocco over marbled boards (rubbed)