This could be a long shot, but maybe you could try and write the company that Peter Falk's biography was published. The address is:
Carrol & Graff Publishers
An Imprint of Avalon Publishing Group, Inc.
245 West 17th Street, 11th Floor
New York, NY 10011
If they don't have them, maybe they can recommend someplace else.
Wow thank you very much for this information Cindy. Long shot or not, I may very well give it a go. It can't do any harm!