This dataset comes from the following book (Appendixes 1-3):

Nichols, Johanna. 1992. /Linguistic diversity in space and time./ Chicago: The University of Chicago Press.

It covers head and dependent marking, alignment, clusivity, alienability, gender agreement, plural marking, and valency-changing operations. At the time when the book was published, this was by far the most extensive grammatical database that had been made publicly available.