Brown did essentially the same thing as Dartmouth--visiting Harvard and Yale every year and visiting Princeton and Penn most years (without a return game).
Cornell always visited Franklin Field until the mid to late 1960s. For whatever reason, they were able to get Princeton, Yale, Harvard, and Princeton to visit Ithaca semi-regularly during that time.
Not sure about Columbia. My guess is that the "big boys" didn't mind coming to NYC every other year.
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