- E-bookThe Homeowner's DIY Guide to Electrical WiringDavid Herres
- E-bookThe Electrician's Trade DemystifiedDavid Herres
- E-bookElevator Troubleshooting & RepairDavid Herres
- E-book2011 National Electrical Code Chapter-By-ChapterDavid Herres
- E-bookTroubleshooting and Repairing Commercial Electrical EquipmentDavid Herres