The Letter of Eugnostos or Eugnostos the Blessed as the text is usually called. has come down to us in two copies. one in NagHammadi Codex III and another less well preserved in Codex V. The text has aroused considerable interest as a possible sample of so-called pre-christian gnosis. https://www.roneverhart.com/BJORK-VULNICURA-2LP-Deluxe-Edition/