1929  . . . a store in the cow country ... for saddles and chapps, and spurs . . . form a conspicuous portion of the goods for sale.
1963  Most English greenhorns are called "Charlie" in the cow country
2Obs. in Indian parlance, areas settled by white men, so called because of their apparent dependence on dairy cattle.
1850  Great was the enjoyment of returning to the comforts and amenities of civilised life. Milk was a luxurious novelty. The Indians call the land of the pale-faces "the cow-country."