This is an early example of a concept list which was employed for the purpose of language comparison. Strictly speaking, the list itself contains much less conceptual items than 173, since the authors list items which are expressed by multiple cognate sets in the languages of California separately. In order to get these cognate sets, they used a list of 225 English words which is, unfortunately, not reported in the study. According to the authors, the list of cognate sets contains 175 items, but in the source, only 171 items are listed, with 2 further being labeled as secondary in the source. In order to keep close to the original, we decided to add their concept list in unmodified form to the concepticon.