Natural history has produced some of the most trusted and recognisable voices of the modern era. From pioneering conservationists to globally broadcast storytellers, these authors have shaped how we understand the natural world. Signed first editions in this field carry particular appeal: many figures associated with landmark documentaries, scientific breakthroughs or environmental movements signed relatively small numbers of books compared to mainstream literary authors. As public interest in climate, biodiversity and sustainability continues to grow, so too does demand for authoritative voices with lasting cultural relevance. The carefully selected copies featured here combine historical significance, global name recognition and increasing collectibility, making them compelling additions for both readers and long-term book investors.