Biographies of Michael Crichton have been published in various of the books about his works (see below). Here's a little e-book with another one.
Available from most eBook sellers.
Michael Crichton: A Critical Companion
Published in 1996 in theCritical Companions to Popular Contemporary Writersseries and written by Elizabeth A. Trembley. It includes chapters on Michael Crichton's life and his Literary Heritage, and one for each novel from The Andromeda Strain (1969) to The Lost World (1995).
The Science of Jurassic Park and The Lost World or, How to Build a Dinosaur
The movies Jurassic Park and The lost World harnessed such a success that they soon became Michael Crichton´s best known novels. This book by Rob DeSalle and David Lindley in 1997 analysed the scientific verisimilitude of these works.
Michael Crichton. A Reader's Checklist And Reference Guide
By 1999 there obviously were already avid collectors of Michael Crichton works who would be interested in a checklist to be fully up to date. This little pocket book did the job, including Crichton's novels under the various pseudonyms he used.
Readings on Michael Crichton
This 2004 Literary Companion from the Greenhaven Press covered some novels up to Prey and additional chapters on movies, including a very interesting one specifically on the scientific accuracy in films and one on Jurassic Park.
The Science of Michael Crichton
Once again, the science in Michael Crichton's works attracts attention. In this occasion it is a collection of chapters edited by science in films expert Kevin Grazier in 2008 as part of the Science of Pop Cultureseries of Benbella Books.
Conversations with Michael Crichton
An invaluable book for any Michael Crichton fan, this volume collects various articles about the author and several magazine interviews as well as transcripts of TV interviews. A great posthumous homage to the great writer, published in 2011 and edited by Robert Golla; perhaps the definitive book to draw a profile of Michael Crichton.