Desoto/Ford flathead engines

First, I am looking for early Desoto hemi engines - specifically the 276/291 engines that came out of 1952-55 Desotos. Also, late desoto hemi heads (56/57) are in need as well.
Secondly, Ford flathead blocks from 49-53. I might be interested in an earlier one, but mostly the later blocks.
With both of these types of motors I only need the blocks, but will buy the entire engine if I can afford it.
I am in CA, but am driving as far as Missouri this summer...with a box trailer....