From b26dc65c415c69af050f1ef28c5505f10f5800bb Mon Sep 17 00:00:00 2001
From: Ray Speth <speth@mit.edu>
Date: Fri, 18 May 2018 10:51:36 -0400
Subject: [PATCH] [Doc] Provide links to docs for old versions of Cantera

---
 doc/sphinx/index.rst    |  1 +
 doc/sphinx/old-docs.rst | 12 ++++++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 doc/sphinx/old-docs.rst

diff --git a/doc/sphinx/index.rst b/doc/sphinx/index.rst
index 8a0dc5f17..1a752baa8 100644
--- a/doc/sphinx/index.rst
+++ b/doc/sphinx/index.rst
@@ -39,6 +39,7 @@ Documentation
    matlab/index
    cxx-guide/index
    glossary
+   old-docs
 
    Cantera Development Homepage <https://github.com/Cantera/cantera>
 
diff --git a/doc/sphinx/old-docs.rst b/doc/sphinx/old-docs.rst
new file mode 100644
index 000000000..7f077cc56
--- /dev/null
+++ b/doc/sphinx/old-docs.rst
@@ -0,0 +1,12 @@
+************************
+Historical Documentation
+************************
+
+For reference purposes, documentation for previous versions of Cantera is
+maintained online. Please note that these versions of Cantera are obsolete,
+and users are strongly encouraged to migrate to the current version of Cantera.
+
+* `Cantera 2.3.0 <https://cantera.org/docs-2.3/sphinx/html/index.html>`_
+* `Cantera 2.2.1 <https://cantera.org/docs-2.2/sphinx/html/index.html>`_
+* `Cantera 2.1.2 <https://cantera.org/docs-2.1/sphinx/html/index.html>`_
+* `Cantera 2.0.2 <https://cantera.org/docs-2.0/sphinx/html/index.html>`_