The twenty-seventh volume of Geographers: Biobibliographical Studies includes essays covering the geographical work and lasting significance of eight individuals between the late sixteenth century and the early twentieth century. The essays cover early modern geography, cartography and astronomy, geography's connections with late Renaissance humanism and religious politics, ‘armchair geography' and textual enquiry in African geography, medical mapping and Siberian travel, human ecology in the Vidalian tradition, radical political geography in twentieth-century USA, American agricultural geography and cultural-historical geography in Japan and in India. In these essays, GBS continues to provide detailed insight into the richness of geography's intellectual traditions and the diversity of geographers' lives.