You could use the ATP Iris Search by clicking on the "Search By Characteristics" option and then highlighting the Honorable Mention or Award of Merit box. If you click on both it will only search up the Award Of Merit irises (which had to get Honorable Mention to be eligible for the AM). So you have to do a separate search for the Honorable Mention ones. There are other awards...but if you are talking about TBs those are the main awards.
You can also search up the awards on the AIS site...but they are listed by year so you have to go one year at a time and it doesn't give you the pictures, only the names. (ex. search: AIS Iris Awards 2012) This list will include all sizes and varieties of irises.