David A. Adler created the character of Cam Jansen, a young boy who solves mysteries. He also created the character of Jeffery Bones. He also writes biography books for young people.
yes he is
Yes Wendy Adler Sonnenberg is still alive.
so far
Yes Mothercare still sells childrens' reins- about 5 styles I believe as well as wrist straps for older children
No
Yes, David McKee is still alive. He was born on January 2, 1935, and is a British writer and illustrator, known for creating popular children's books such as "Elmer the Patchwork Elephant" and "Not Now, Bernard."
the question is still un answered
Is Dottie Peoples still married?. Does she have any childrens?. Is her parents still living?.
no
Yes, David Tennant is still living.
Alan Garner is the author of many children's books including Elidor and The Owl Service. He also wrote the Moon of Gomrath, Red Shift, Strandloper, and still others.
David Baldacci's works are still a fairly new as far as books go, so they are not yet available in the public domain. This means that they cannot be read for free online legally. However, they can be purchased in e-book form. See the related link and questions below.