FWIW, If someone were making a LAC selectivity ranking (weighted admit % +SAT) in 1971 it would have looked like this:
Swarthmore
Amherst
Haverford
Wesleyan
Williams
Middlebury
Bryn Mawr
Oberlin
Bowdoin
Pomona
Hamilton
Wellesley
Sarah Lawrence
Vassar
Smith
Davidson
Trinity College
Reed
Colgate
Union
Carleton
Colby
Occidental
Bates
Barnard
Mt Holyoke
Claremont
Grinnell
Macalester