- eBookThe Homeowner's DIY Guide to Electrical WiringDavid Herres
- eBookThe Electrician's Trade DemystifiedDavid Herres
- eBookElevator Troubleshooting & RepairDavid Herres
- eBook2011 National Electrical Code Chapter-By-ChapterDavid Herres
- eBookTroubleshooting and Repairing Commercial Electrical EquipmentDavid Herres