Doc Graves: Has no BBR page and no Chadwick ID, plus I didn't see him on statcrew... but I found him here:
https://scholars.fhsu.edu/cgi/viewco...all_monographs
Page 90 in the book and page 12 of the pdf. Those years match the teams in the db associated with him so someone went through some effort to find him and add him to the database at some point.