Websites:

Seed Savers
Shop from a large assortment of heirloom seeds. Seed savers is a tax-exempt 501(c)3 nonprofit organization dedicated to the preservation of heirloom seeds.

Baker Creek Heirloom Seeds
They offer a diverse selection of heirloom seeds, these varieties have often been saved and passed down by gardeners for generations. Their mission is to provide the seeds of a sustainable food supply for everyone and keep heirloom varieties alive for future generations.