If we are interested in helping to rescue breeds that are considered Critical by the American Livestock Breeds Conservancy, these appear to be the best choices for our situation, imvho:
Hollands have earned a good reputation as being ideally suited to farm conditions. They are good foragers with calm temperaments. The breed is fairly cold tolerant, though during periods of extreme cold the males may suffer some frostbite to their single combs. The hens can become broody and will sometimes raise their own offspring. Hollands also tend to have a slow to moderate growth rate. But this fact must be weighed against their ability to rustle a significant portion of their own food.
Sumatra hens lay an abundant number of white, or lightly tinted, eggs and are considered excellent winter layers. They are also among the best of mothers and broodies. Both adults and chicks are very hardy and easy to raise. Sumatra chickens are active and alert and are especially good at launching themselves vertically to escape dangers.
Getting what is easiest to acquire from Ol’ Mill Hardware is our most likely choice, though.