Favorite seed sources from the Dude Ranch team at Haberman: 

Seed Savers Exchange is a non-profit, member supported organization that saves and shares the heirloom seeds of our garden heritage, forming a living legacy that can be passed down through generations. Its loyal members have distributed an estimated 1 million samples of rare garden seeds since the organization's founding nearly 35 years ago.

Johnny's Seeds. Great source for bulk organic seeds. The family-owned company's mission is to help friends, family and communities feed one another by providing superior seeds, tools, information and service.

Renee's Garden. Super source for cut-and-come again lettuces. Seed lines feature Renee's personal selection of new, exciting and unusual seed choices of time-tested heirlooms, the best international hybrids
and fine open-pollinated varieties. She harvests and uses the vegetables and
herbs in her kitchen to choose the most delicious, and cut the flowers for
bouquets to select the finest colors, forms and fragrances.