In 1973, archaeologists working in Mawangdui (in China) discovered two copies of the Daodejing written on silk. The Mawangdui texts are much earlier versions of the Daodejing than scholars had previously had available. The translation in Readings in Classical Chinese Philosophy makes use of both the Mawangdui and the traditional Wang Bi versions of the manuscript.
Above is a photograph of part of one of the Mawangdui versions of the Dao De Jing, including what is now Chapter 1 of that text.
The photograph comes from Chen Songzhang, ed., Mawangdui boshu yishu (Shanghai shudian chubanshe, 1996), p. 5.