looking for a rare seed

Hello, I am trying to find seeds for an heirloom variety of pea called Strategem peas. i am needing them for a era-specific garden project im working on. They are from England way back. The only place i can find them for sale in Prairie Garden Seeds in Canada, but they won’t ship to usa anymore due to …reasons…im wondering if anyone here could help me find a source to get these seeds? thanks in advance