Yes, Robert Lawson has won both.
Yes, "Owl Moon" by Jane Yolen won the Caldecott Medal for its illustrations in 1988, rather than the Newbery Medal. The Newbery Medal is awarded for the text of a distinguished American children's book.
The 2011 Newbery Medal was awarded to Moon Over Manifestby Clare Vanderpool.The 2011 Caldecott Medal was awarded to A Sick Day for Amos McGee by Erin E. Stead.
No, Jerry Spinelli did not win a Caldecott Medal. He is an author who is known for writing young adult literature, but the Caldecott Medal is specifically awarded for the most distinguished American picture book for children.
Robert Lawson won the Caldecott Medal in 1941 for They Were Strong and Good. He won the Newbery medal in 1945 for Rabbit Hill.Tomie dePaola won a Caldecott Honor Medal for Strega Nonain 1976. He won a Newbery Honor Medal for 26 Fairmont Avenuein 2000.
The Newbery Award for 1962 was awarded to The Bronze Bow. It was written by Elizabeth George Speare. The book met the criteria for providing a distinguished contribution to children's literature.
Prayer for a Child by Rachel Field won the Caldecott Medal in 1945.
Black and White by David Macaulay won the 1991 Caldecott medal.
Dr. Suess never won a Newbery Medal. While his books are fun and well illustrated, they were not distinguished contributions to children's literature. His books are likely to remain popular all the same!
The Newbery Medal winner in 2000 was "Bud, Not Buddy" by Christopher Paul Curtis. It is a poignant and humorous story about a young boy named Bud who embarks on a journey to find his father during the Great Depression.
Make Way for Ducklings by Robert McCloskey won the 1942 Caldecott Medal.
Sylvester and the Magic Pebble by William Steig won the 1970 Caldecott Medal.
Sylvester and the Magic Pebble by William Steig won the 1970 Caldecott Medal.