A corny idea

We were talking about growing wheat to make our own loaf, so I took the idea and thought about growing some ancient grain varieties such as emmer, spelt or einkorn.

However, the local garden centre doesn't sell wheat to grow. Infact, here in suburbia I am at a loss where to go.

Does anyone know where i can get a small handful of spelt to plant? It will probably have to be next year now, but it would be great to get hold of some ancient wheat.