Cook, Jonathan Tweet, and Skip Williams all contributed to the 3rd edition Players Handbook, Dungeon Master's Guide, and Monster Manual, and then each designer wrote one of the books based on those contributions.
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On September 20, 2011, Mike Mearls announced that Cook would be taking over his "Legends & Lore" column for the Wizards of the Coast website.
Monte Carlo | James Cook | Cook Islands | Cook County, Illinois | James Cook University | Cook County | The Count of Monte Cristo | Cook | Monte Cassino | Captain Cook | Dane Cook | David Cook | Ready Steady Cook | David Cook (singer) | Barbara Cook | Monte Carlo method | Cook Strait | Chevrolet Monte Carlo | Survivor: Cook Islands | Del Monte Foods | Del Monte | Roger Cook | Robin Cook | Rachael Leigh Cook | Monte Rosa | Marisa Monte | Cook County, Minnesota | Thomas Cook | The Cook, the Thief, His Wife & Her Lover | Paul Cook |
The three primary designers behind the d20 System were Jonathan Tweet, Monte Cook and Skip Williams; many others contributed, most notably Richard Baker and Wizards of the Coast then-president Peter Adkison.
Monte Cook, Jonathan Tweet, and Skip Williams all contributed to the 3rd edition Players Handbook, Dungeon Master's Guide, and Monster Manual, and then each designer wrote one of the books based on those contributions.