- E-bookTruth Is In The Mind Of The BeholderM. D. Wadsworth
- E-bookSéries: Duke's Tips for Office - Versions 2007 and LaterM. D. Wadsworth
- E-bookDuke’s Tips For Finding Functions in ExcelM. D. Wadsworth
- E-bookThe Job Seeker's EdgeM. D. Wadsworth
- E-bookDuke's Tips For Finding Functions in WordM. D. Wadsworth
- E-bookDuke's Tips For Staying YoungM. D. Wadsworth