diff --git a/preserves.md b/preserves.md
index aac4552..b7a7026 100644
--- a/preserves.md
+++ b/preserves.md
@@ -904,6 +904,10 @@ values is inspired by a similar feature of [CBOR](http://cbor.io/).
 The treatment of commas as whitespace in the text syntax is inspired
 by the same feature of [EDN](https://github.com/edn-format/edn).
 
+The text syntax for `Boolean`s, `Symbol`s, and `ByteString`s is
+directly inspired by [Racket](https://racket-lang.org/)'s lexical
+syntax.
+
 ## Appendix. Table of lead byte values
 
      00 - False