Who's Who in the Moon is aimed not only at the beginner or near-beginner, but also at the backyard astronomer who is perhaps experienced in other areas of observation but who has decided to spend more time considering the Moon as an alternative target. The book provides a visual introduction to our closest celestial neighbour, opening with an introductory section which details not only the history of lunar mapping and naming of lunar formations, but also provides useful information on observing the lunar surface and what observers can realistically expect to see when they look at the Moon with the naked eye, binoculars or a small/medium telescope. The introductory section is followed by a lengthy series of images, including not only wide field panoramic views, but also a large number of more detailed images showing close-up views of different areas of the Moon and featuring individual craters, mountains, valleys and much more. Many of the individual features shown on these images are identified by name and are accompanied by biographical sketches relating to the men and women after whom they are named. This is a non-technical, up-close-and-personal visual look at the Earth’s only natural satellite and many of the individual features scattered across its surface. Rather than offering itself as a full and exhaustive guide to the lunar surface, A Guide to the Moon is more of a vade mecum which enables and (hopefully) encourages the reader to become more acquainted with the lunar landscape on a personal level, with a view to learning more about the astronomers and other scientists whose names are immortalised by having lunar features named after them. Who's Who in the Moon was inspired by, and is a tribute to, a Memoir published by the British Astronomical Association (BAA) in 1938 entitled Who’s Who in the Moon written by Mary Evershed, the first Director of the BAA Historical Section. The biographical notes in A Guide to the Moon include examples of those penned by Mary Evershed in her original publication.