Matching set of three copper engraved maps with the same title: "L' Empire de Russie, en Europe et en Asie", sheets 1, 2 & 3. All are nice charts in larger format than normally seen for Bonne. Each with 10 distance scales. Good detail particularly on the western sheet which names dozens of cities and villages, rivers and mountains. Delineates and names the regions of Russia in Europe. Together they cover the entire Russian Empire from St. Petersburg to the Camczatca peninsula.
All with crisp, early impressions on thick hand laid paper. Two tiny wormholes on each.