Looking for more Polish heirloom crops from either settlers or immigrants who came to America.

Good evening friends! How are you? Blake is on a quest to hunt down more heirloom crops from Poland or from the settlers or immigrants who came to America years ago to commemorate his community's immigrant past in Chicago to edify everybody. Found a few crops so far, but looking for more from throughout the 1800s. Looking for more help in finding some heirloom kale, cabbage, peas and potatoes to grow for next year and years to come. Some stuff will be hard to obtain and be brought to America without the challenges that come with it. If there's anybody able to help me obtain these varieties, please let me know. Take care!