- E-bookRoget's Thesaurus of Words for WritersDavid Olsen
- E-bookThe Big Book of Words You Should KnowDavid Olsen
- E-bookRoget's Thesaurus of Words for IntellectualsDavid Olsen
- E-bookThe Unexpected Evolution of LanguageJustin Cord Hayes
- E-bookRoget's Thesaurus of Words for StudentsDavid Olsen
- E-bookThe Terrible Meanings of NamesJustin Cord Hayes
- E-bookHis/HersJustin Cord Hayes