Anyone who was a kid in the 60's/early 70's and watched any tv at all will remember this young lady, even if you didn't know her name. Pamelyn Ferdin was probably one of the most prolific child actors of that era. She was a major teen idol. Most would remember her as Lucy Winters from the Jan Brady wig episode. But she also appeared in Lassie, Gunsmoke, The Odd Couple, etc. Also in 1971, she was the voice of Lucy in the Charlie Brown TV Special: You're in Love, Charlie Brown. She was also in hundreds of TV commercials. This is a link to her fan site:
http://pamelynferdin.com/