Bibliographical sources mentioned in this text:
Ado 87.6
Annonius the monk 87.8
Chytræus, David : Saxon History 87.9
Cranzius is mentioned on Ort87B, the mapsheet of Wandalica;
: History of Saxony Bk.5, ch.27 87.2-6, 87.8, 87.9, 87.12, 87.17
Ed(e)ling, Peter 87.17, maker of Ort87B
Helmond(us) 87.6, 87.17
Iordanus, Marcus is mentioned in the cartouche of the Holstein map as its maker, Ort87A
Irenicus, Franciscus 87.15
Saxo Grammaticus 87.17