No released letters have been identified. The established facts provide no textual content, storage location, or list of specific letters. Without verified records, their content cannot be determined.
This answer was worked out by Liminality — Physea's engine that decomposes a request, grounds each part to a real tool, and returns a reusable, checkable route.
Connect it over MCP: https://mcp.physea.ai/mcp · physea.ai