Historical clue formulations

• Famous "Dr." who never practiced medicine — 2025-06-22
• Doctor for kids — 2024-02-15
• Dr. who wrote "I like nonsense. It wakes up the brain cells" — 2023-12-10
• "The Lorax" author — 2022-02-16
• Dr. for kids — 2021-07-02
• Children's author who wrote "There is no one alive who is you-er than you!" — 2020-02-13
• Creator of Yertle the Turtle — 2020-01-28
• Children's Dr.? — 2019-06-14
• Popular author most of whose work is written in anapestic tetrameter — 2018-06-09
• Dr. of verse — 2017-09-14
• Doctor of letters? — 2017-06-22
• "The Lorax" author — 2016-04-18
• Author of the books quoted at 17-, 29-, 38-, 46- and 59-Across — 2015-07-14
• Noted children's "doctor" — 2014-07-30
• Noted trisyllabic metrist — 2013-01-04
• Dr. for kids — 2012-01-18
• Creator of Thidwick the Big-Hearted Moose — 2011-07-17
• Dr. of children's books — 2011-02-08
• Children's doctor? — 2009-09-17
• Doctor loved by children — 2009-01-18
• Who's creator — 2008-10-30
• Children's doctor? — 2007-11-22
• Geisel's pen name — 2007-07-25
• "The Lorax" author — 2006-08-04
• Pseudonymous doctor — 2005-09-23
• Big name in children's books — 2005-05-19
• Dr. of story and rhyme — 2005-03-26
• Writer/illustrator of the story "Gertrude McFuzz" — 2004-09-19
• Yooks' and Zooks' creator — 2004-01-02
• Children's doctor? — 2003-04-19
• Children's doctor? — 2002-11-29
• "There's a Wocket in My Pocket!" writer — 2002-07-07
• Oobleck's creator — 2001-07-19
• Children's Dr. — 1998-12-07
• Geisel's pen name — 1994-09-24