Dirk Gringuis
Source: "Dirk Gringuis Bibliography." Author Wars, https://authorwars.com/authors/dirk-gringuis.html".
Pseudonyms:
Titles:
Cover Art
Interior Art
- Unknown. Addendum to Who's Who in Oz
- Unknown. Brickbats and Bouquets: Criticism of Frank Kramer's Work
- Unknown. Percy, the Personality Kid
- Unknown. Terp, the Terrible
- Unknown. The Hidden Valley of Oz
- Unknown. The Hidden Valley of Oz
- Unknown. The Scarecrow
- Unknown. The Shaggy Man of Oz (unused Drawing)
- Unknown. Who's Who in Oz