@cliftoncat
Thank you so much for the suggested selection criteria and the other websites. Both Bourdillon and Gombault have a number of rebloomers, particularly Gombault.
I would also like to thank you for the generous offer to send me some iris! I am definitely interested and will gladly pay the postage. I have a delivery address in Germany which will eliminate the problems which might arise when sending plants to Switzerland (import duties, etc) as we are not in the EU. Please mail me when the time comes. Thanks again!!