More documentation of the work done in this case by Wayne County. Highlights and any handwritten notations are mine. Further redactions were added to additionally obscure victims’ names and identifying information.
These and other documents indicate that some 60 people have been swabbed for DNA in this case as of 2019. (I can think of two more men whose relatives should be swabbed, but no one asked me.) Even more reason to have sophisticated DNA testing and genetic genealogy research done in this case. These are not people who would show up in the offender indices of CODIS (COmbined DNA Information System, originating in the 1990s).