diff --git a/README.md b/README.md
index d2636a5..07a9268 100644
--- a/README.md
+++ b/README.md
@@ -342,3 +342,12 @@ URL PATTERN
 | [Email-InviteCollaborator.png](https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/09-email-template/Email-InviteCollaborator.png?raw=true) | <img src="https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/09-email-template/Email-InviteCollaborator.png?raw=true" /> |
 | [Email-InviteSpouse.png](https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/09-email-template/Email-InviteSpouse.png?raw=true) | <img src="https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/09-email-template/Email-InviteSpouse.png?raw=true" /> |
 | [Email-WifiSelfSignup.png](https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/09-email-template/Email-WifiSelfSignup.png?raw=true) | <img src="https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/09-email-template/Email-WifiSelfSignup.png?raw=true" /> |
+
+### reference
+
+URL PATTERN
+> https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/reference/FILE.png?raw=true
+
+| File name | Description |
+| --- | --- |
+| [Email-ExpirationPolicy.png](https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/reference/Mailinator.png?raw=true) | <img src="https://github.internet2.edu/InCommon-Training/comanage-files/blob/master/registry/original-class/workbook/reference/Mailinator.png?raw=true" /> |
\ No newline at end of file
diff --git a/registry/original-class/workbook/reference/Mailinator.png b/registry/original-class/workbook/reference/Mailinator.png
new file mode 100644
index 0000000..c3e0609
Binary files /dev/null and b/registry/original-class/workbook/reference/Mailinator.png differ