ERAÜ has published a comprehensive book on the history of Estonian amateur radio, titled "From morse key to mouse click. Time travel with Estonian radio amateurs". It gives a survey of our hobby from its start in the 1920-ies through the decades up to nowadays - 462 pages, full colour print with many photos, drawings and tables. The book is in Estonian language, but has an English summary at the end (on 7 pages). Written by Teolan Tomson (ES1AO) and Arvo Pihl (ES2MC). The book was presented at the Estonian summer camp on 14 August 2020.