diff --git a/lisp/info-look.el b/lisp/info-look.el
index 2baf133c7d3..41e64753844 100644
--- a/lisp/info-look.el
+++ b/lisp/info-look.el
@@ -30,6 +30,8 @@
 ;; Scheme: https://groups.csail.mit.edu/mac/ftpdir/scm/r5rs.info.tar.gz
 ;; LaTeX: https://mirrors.ctan.org/info/latex2e-help-texinfo/latex2e.texi
 ;;  (or CTAN mirrors)
+;; Python: https://www.python.org/ftp/python/doc/
+;; SICP: https://github.com/webframp/sicp-info
 
 ;; Traditionally, makeinfo quoted `like this', but version 5 and later
 ;; quotes 'like this' or ‘like this’.  Doc specs with patterns