Index: snippets-html.rkt
==================================================================
--- snippets-html.rkt
+++ snippets-html.rkt
@@ -185,14 +185,17 @@
  —◊author-part
  </div>
  </div>})
 
 (define (html$-notes-section note-htmls)
-  ◊string-append{<div class="further-notes" id="furthernotes">
- <h2>Further Notes</h2>
- ◊(apply string-append note-htmls)
- </div>})
+  (cond
+    [(null? note-htmls) ""]
+    [else
+     ◊string-append{<div class="further-notes" id="furthernotes">
+      <h2>Further Notes</h2>
+      ◊(apply string-append note-htmls)
+      </div>}]))
 
 ;; (private) Returns HTML for a list-item link to a particular page in a set of numbered pages
 (define (html$-paginate-link basename pagenum [linktext (number->string pagenum)] [class ""])
   (define cstr (if (non-empty-string? class) (format " class=\"~a\"" class) ""))
   (format "<li~a><a href=\"/~a-pg~a.html\">~a</a></li>" cstr basename pagenum linktext))