This is an extremely useful resource, rich detailed and fascinating. It is a project that was developed by Thornton Ladd whose industry is to be admired and generously published for free use by The Archive for Research in Archetypal Symbolism (ARAS).

The concordance present you with a search box into which you invited to insert keywords.

The results are a treasure trove of references deep into the Collected Works – it seems that the Letters and some of the Seminars are also included in the search.