He is the author or editor of 9 other books, a special issue of the Journal of Language Contact, and over 100 articles and a dozen reviews on topics spanning the languages and cultures of the ancient Near East, particularly focused on categorization, etymology, and historical linguistics. He supplied the etymologies of all English words with Semitic origins to the 4th edition of The American Heritage Dictionary of the English Language (2000, revised in the 5th edition, 2011), plus the Appendix of Semitic Roots and the article, "Proto-Semitic Language and Culture," in both editions. In 2019 he co-edited The Semitic Languages,[2] and wrote the chapter on Proto-Semitic, summarizing a lifetime of research on the topic.