diff --git a/_config.yml b/_config.yml
index d0ff763..fa22851 100644
--- a/_config.yml
+++ b/_config.yml
@@ -15,6 +15,7 @@ baseurl: "" # the subpath of your site, e.g. /blog
 url: "http://annabunch.es" # the base hostname & protocol for your site
 twitter_username: annabunches
 github_username:  annabunches
+exclude: ["_posts/**/*.asc"]
 
 permalink: none
 timezone: America/New_York
diff --git a/_layouts/post.html b/_layouts/post.html
index 5e5b91f..07ce3c1 100644
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -12,4 +12,13 @@ layout: default
     {{ content }}
   </div>
 
+  <div class="post-verify">
+    {% if page.md_file %}
+      <hr width="10%" style="margin-bottom: 1em"/>
+      The markdown source for this post is available here: <a href="{{page.md_file}}">{{page.md_file}}</a> <br/>
+      {% if page.sig_file %}
+        The gpg signature for the markdown source is available here: <a href="{{page.sig_file}}">{{page.sig_file}}</a> <br/>
+      {% endif %}
+    {% endif %}
+  </div>
 </article>
diff --git a/_plugins/markdown_and_sign.rb b/_plugins/markdown_and_sign.rb
new file mode 100644
index 0000000..b946681
--- /dev/null
+++ b/_plugins/markdown_and_sign.rb
@@ -0,0 +1,26 @@
+# Adds metadata to the post object for linking to the source page.
+# Also adds metadata linking to the gpg signature file, if it exists.
+Jekyll::Hooks.register :posts, :pre_render do |post, payload|
+  if post.path =~ /\.md$/
+    post.data['md_file'] = "/#{post.data['category']}/#{post.basename}"
+
+    sig_filename = "#{post.path}.asc"
+    if File.exist?(sig_filename)
+      post.data['sig_file'] = post.data['md_file'] + '.asc'
+    end
+  end
+end
+
+# Copy all of the source markdown files and signature files
+# directly into the destination.
+Jekyll::Hooks.register :site, :post_write do |site|
+  dest = site.dest
+  site.posts.docs.select{|p| p.path =~ /\.md$/}.each do |post|
+    FileUtils.cp(post.path, "#{dest}/#{post.data['md_file']}")
+
+    sig_filename = "#{post.path}.asc"
+    if File.exist?(sig_filename)
+      FileUtils.cp(sig_filename, "#{dest}/#{post.data['sig_file']}")
+    end
+  end
+end
diff --git a/_sass/_custom.scss b/_sass/_custom.scss
index 122f8da..5651d4a 100644
--- a/_sass/_custom.scss
+++ b/_sass/_custom.scss
@@ -36,3 +36,7 @@
   font-size: $large-font-size;
   padding: 0px 10px;
 }
+
+.post-verify {
+  font-size: $very-small-font-size;
+}
diff --git a/css/main.scss b/css/main.scss
index 7698d96..ad87348 100644
--- a/css/main.scss
+++ b/css/main.scss
@@ -12,6 +12,7 @@ $base-font-weight: 400;
 $small-font-size:  $base-font-size * 0.875;
 $base-line-height: 1.5;
 $large-font-size: $base-font-size * 1.125;
+$very-small-font-size: $base-font-size * 0.750;
 
 $spacing-unit:     30px;