American Express Co. has given $5,000 to...

American Express Co. has given $5,000 to the Laguna Beach Chamber Music Society to help underwrite performances in south Orange County schools by artists and groups scheduled for the society’s regular 1990 season.

Donny Osmond and the Nitty Gritty Dirt Band will be on hand March 21 as their names are added to the Orange County Walk of Fame at the Anaheim Hilton & Towers, according to a spokeswoman for the walk. Inductees into the walk, launched in 1987, have included Steve Martin, Jose Feliciano, the Righteous Brothers, Gale Storm, Buddy Ebsen, Joey Bishop and Ruby Keeler.