This is BOX SET "Asian Drama" Vol I, II, III, by Gunnar Myrdal SOFTCOVER Pantheon (1968). The books are in great shape/ Age-consistent foxing spotting discoloring on outside; pages themselves are unmarked. i doubt they've been handled, just sitting there 50+ years.
box may be missing top, or not supposed to be there, but it's solid on three sides, not falling apart