Valerie Trouet is a professor in the Laboratory of Tree-Ring Research at the University of Arizona. She is a dendroclimatologist, using tree-rings to study the climate of the past and how it has influenced ecosystems and human history. In 2023, she was appointed the inaugural scientific director of the Federal Center of Expertise on Climate in Belgium. Professor Trouet is the author of Tree Story (Johns Hopkins), the winner of the World Wide Fund's 2020 Jan Wolkers Prize, and the Gold Winner of the 2020 Foreword INDIES Award in Ecology & Environment. For this book, Valerie has collaborated with experts from around the world, each of whom has contributed an account of an ancient tree from their region.

Blaze Cyan is an artist working within the mediums of drawing, etching, woodcut, and wood engraving. She graduated from the City & Guilds of London Art School in 2014 with an M.A. in Fine Art. Blaze is a Fellow of the Royal Society of Painter-Printmakers, a member of the Society of Wood Engravers, and also the Arborealists. Her subject area is landscapes and she has shown work with many leading art and printmaking societies. She is represented by the Eames Fine Art Gallery. She lives in London.