The story
From year + book. Compare Saterland Frisian Jierbouk (“yearbook”), West Frisian jierboek (“yearbook”), Dutch jaarboek (“yearbook”), German Low German Johrbook (“yearbook”), German Jahrbuch (“yearbook”), Swedish årsbok (“yearbook”), Faroese árbók (“annal, record, yearbook”).
Etymology from Wiktionary, CC BY-SA 4.0.