The longstanding processing of a unique manuscript from Scandinavia, now deposited in Slovakia, has resulted in its source edition published as a multi-authored monograph by the German publisher Peter Lang. The Missale Notatum Lundense Pars Aestivalis : Results of Previous Research on the Source and Facsimiles (ed. R. Adamko) publication provides access for the specialized and the lay public to this unique medieval musical manuscript dating back to the turn of the thirteenth and the fourteenth centuries, which is now deposited in the Central Library of the Slovak Academy of Sciences. Missal Ms. 387 is the only musical liturgical manuscript from the medieval period from Scandinavia which has survived in its complete form. It documents the liturgical tradition of the Diocese of Lund (present-day Sweden; the diocese was established in 1048 as part of the Kingdom of Denmark). The monograph contains the facsimile edition of the source along with interdisciplinary studies by a team of authors (Rastislav Adamko, Janka Bednáriková, Rastislav Luz, Adam Sýkora, Eva Veselovská, Zuzana Zahradníková), which deal with the codex from the aspect of musicology, codicology, palaeography, liturgics, and general history.