The Cardassian Sourcebook was a sourcebook detailing the Cardassian people. After Last Unicorn Games closed their doors, several supplements that were in their pipeline were scrapped. Among these was Iron and Ash, a supplement detailing the Cardassians. When this box set was scrapped, some users at the web site Trek-RPG.net came together and created a fan-created sourcebook dedicated to these favorite DS9 adversaries. The sourcebook was released in 2004, for free in PDF format. The first book examines the Cardassian physiology, culture, education, history, technology, ships and language as never before. The second book contains the RPG mechanics for integration into a LUG game. Together, they comprise over 150 pages with all-original artwork.