# 100 Objects #13: The Sand Letters - 99% Invisible

- Source: 99% Invisible (99percentinvisible.org), All rights reserved
- Published: 2026-08-25
- Read it at the publisher: <https://99percentinvisible.org/episode/100-objects-013-the-sand-letters/>
- Why the text is not here: This work is under copyright, so it is described here and read at the publisher.
- Page: <https://sprout.rootsofreason.org/r/99-invisible/100-objects-13-the-sand-letters-99-invisible>