Shalom John. I'm trying to do research for my pastor. We definitely have lots of the reference works you've listed on your terrific website. But what I'm seeking seems a little harder to find. I'm looking for straight concentrated lists of Hebrew words arranged by their common roots. I want to find lists that will 'alphabetically' arrange all the Hebrew Root words, and beneath each one, list the biblical words which stem from that root (cognates?). I'm am trying to be thorough in my search, but so far have only come up with a list in a vocabulary book by Landes, and another newer book by Van Buren and Pratico. The first one is inconveniently formatted for what we're doing. The second one doesn't claim to be thorough. Do you have any ideas where I might find this? Or who I should be asking? thanks in advance.