The Presby Memorial Iris Gardens were established in 1927 to honor Frank H. Presby, a founder of the American Iris Society.  They are home to the largest public collection of irises in the United States.  This year they are renovating their heirloom beds and are offering historic irises from these beds for sale.  You can see (and order) the initial twelve historic irises they are offering at their shop on Etsy.  Their iris varieties for sale will be updated as they continue to renovate their beds through July and August.