Cast change announced for 'On Golden Pond'

NEW YORK, April 28 (UPI) -- TV stars Tom Bosley and Michael Learned will replace Richard Chamberlain and Haley Mills in the U.S. touring company of "On Golden Pond."

The change was made after Chamberlain withdrew from the production for personal reasons, Playbill.com reported Friday.

The 20-week tour of the 2005 Tony Award-nominated production kicks off Aug. 22 in St. Paul, Minn.

Bosley is best known as "Happy Days'" Howard Cunningham while Learned played Olivia Walton on the long-running family drama, "The Waltons."

Bosley won a Tony Award for "Fiorello!" and Learned's recent Broadway credits include "The Best Man" and "The Sisters Rosensweig."