This QGIS XML style file brings the historic color palettes of the Albums de Statistique Graphique (1879–1897) into the QGIS environment. The palettes — featuring sequential, diverging, grouped, and categorical color ramps — were originally used in thematic maps and statistical visualizations produced by France's Ministry of Public Works under the direction of Émile Cheysson, a period widely regarded as the pinnacle of the Golden Age of Statistical Graphics. The style includes 20 carefully extracted palettes, each named by album year and plate number (e.g., 1880_07, 1881_03), making them ready for cartographic and data visualization work in QGIS. Credits & Attribution:

Michael Friendly — creator of the ggCheysson R package, which served as the primary source for these palettes (github.com/friendly/ggCheysson) RJ Andrews — SVG pattern extraction and original color digitization from the Albums (infowetrust.com) Tom Shanley — Observable implementation of the Cheysson palettes Kenneth Fields — creation of the hand-drawn Cheysson font families and Esri style research David Rumsey Map Collection — digitization of the complete Albums de Statistique Graphique

Special Thanks: Denis Artur for his invaluable help and support during the creation of this QGIS style file