1958, The Blackfeet; Raiders on the Northwestern Plains, by John Canfield Ewers, page 258
To make their beverage even more attractive, the Americans mixed their alcohol not only with the usual branch water, but also with black chewing tobacco, red peppers, Jamaica ginger, black molasses, and other strong substances.
1960, Flying Magazine - May 1960 - "Doughnuts and Democracy" by Marion A. Wright, at Page 278
I play no favorites as between coffee and tea-—I am a Bourbon and branch-water man myself—but I suggest that in History's long view the Greensboro Coffee Party may loom as large as the Boston Tea Party.
1962, Joyleg, By Ward Moore, Avram Davidson, page 30
Tully ordered Tennessee whisky, assented to the supposition that the gentleman didn't want mixer, ice, or chaser. "Yes sir — always say, If the good Lord wanted branch water in liquor, He would have put it there."