But it is. The Surangama Sutra is part of this publication, Tranquillity's Secret, and is freely available here on Medium, as well as on my website, stilljustjames.com. Under the image in this article is a navigation bar of links. Simply select "Tradition" and scroll a little way down in the table of contents for the Surangama Sutra. There are other translations of the Surangama Sutra, and most are copyrighted. You can, however, download a free PDF copy of it from the Buddhist Text Translation Society.