Certified GKH Gardening Expert
While these are not true poppies, I believe you are looking for the Himalayan blue poppy. We don't recommend plant or product vendors, but a quick Internet search did pop up some seed vendors. Most were in the UK, but at least one looked like a reputable seed company in the U.S. I would refrain from purchasing from individuals, but stick to reputable seed companies.
I notice you live in Reno, which may be too warm for these plants. They have specific growing requirements, and they can be difficult. Here is more: