There were also differences in the dates that the crop matured in the various growing areas.
Re: Potatoes
Were the same varieties of potatoes grown in Idaho & Maine? I’ve no idea what kinds were grown in Maine. My image of an Idaho potato is just the Russets, but that may be more out of ignorance (maybe I should look at the bags, next time I’m in the store ;-) than any actual knowledge of what varieties are/were grown in Idaho.