In the March issue, we explore the stamps and postal history telling the story of the conquest of the Pacific Ocean by air in the 1920s and 1930s, from American and Australian pioneer aviators to regular airmail services by flying boat. On the 30th anniversary of Royal Mail’s Greetings stamps, we examine the rationale behind these annual booklet issues, their design and their legacy. We also offer a thematic guide to the history of fingerprinting, to find out how the men who developed this forensic science have been celebrated philatelically. Our regular Commonwealth Classics feature celebrates the first commemorative issue of St Helena and our Great Engravers slot showcases the work of Yves Beaujard for France, while GB Themes assesses British stamps on the subject of emergency services. In our news section, you can find out why a new issue from Great Britain is reproducing art by Leonardo da Vinci, see our pick of the most interesting new issues from around the world, and marvel at the latest highlights from the auction rooms. As ever, our columnists and our readers offer their forthright opinions.