If you want to do it yourself,
Mac: 
https://www.provideocoalition.com/howto_create_dvd_iso_from_files_mac/
Windows: 
http://wincdemu.sysprogs.org/tutorials/create/
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
On Sat, May 4, 2019 at 12:53 AM J. Peterson via cctech <
cctech at classiccmp.org> wrote:
  Hi,
 I have a stack of a few dozen CD-ROM disks with various files (old
 software, backup files, photos). I'm willing to pay a reasonable rate
 to have somebody read each of these in, convert them to .ISO files or
 some other reasonable format, and either make them downloadable or
 put them on a thumb drive.
 Does anybody know of such a service? I can find lots of services for
 converting  audio CD's into MP3 files, but nothing that specifically
 handles data CD-ROMs.
 Any leads most appreciated. Please reply directly, as I don't often
 check this list.
 Thanks,
 jp