The topic is limited by just one author, so the depth is not expected to be too great. However, very little is available to download directly from the site. C Another site with possibilities, but a weak presence. There are no recent updates and some external links are defunct. Variety and depth are problems, however, the designer provides a range of external links, on-site documents and images.
Navigation is the most serious issue here.
There is no index or consistent navigation bar available. While I assume someone highly interested in the study of Hawthorne created the site, his or her presence is invisible. This hampers reliability. A site with some attitude, but not particularly engaging. This is, apparently, part of a University of Texas at Austin class project a few years ago.