8.3. WORKING WITH TRANSACTION HISTORY [YUM]

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/deployment_guide/sec-yum-transaction_history

Perfect, Concise, extremely well written without any "Redhat is Best" [ [ Ala: MS :) ] Just what I needed with examples not found in the man page. First link found in Google and I have what I need.
Chuck Hill, CISSP