How many stars can you name singing Let The Sunshine In? (1970)

 The National Urban League commissioned this star-studded spot from the Ad Council. I'll help you out by identifying the easy ones:

Henry Fonda.

Greg Morris (Mission: Impossible).

Ed Sullivan.

Peggy Cass (To Tell The Truth).

Arlene Francis (What's My Line?).

Ray Charles.

Jim Backus (ex-Gilligan's Island, Blondie).

Johnny Carson (The Tonight Show). 

Keye Luke.

Merv Griffin.

Orson Bean (To Tell The Truth).

Leonard Nimoy (Mission: Impossible, ex-Star Trek)

You'd think they'd slip in the 5th Dimension, who originally recorded "Let The Sunshine In" for the "Hair" soundtrack a year earlier....