If you didn’t know, Enheduanna received its ISSN (International Standard Serial Number) from the Library of Congress in 2016. This means the serialization of the journal has a unique number that identifies it to libraries around the world. Each volume has its own ISBN, so that each volume is unique book. Each year we mail off two copies to the Library of Congress as required by their Mandatory Deposit program in trade for the free ISSN. Sometimes we get a little creative and send a telegram along with the copies!