Perhaps no one has ever had a bigger impact on an entire generation of children than Dr. Benjamin Spock.

His book Baby and Child Care was published in 1946, just as the first baby boomers were being born. And his calm, reassuring tone quickly found an audience among new parents. Dr. Spock became the go-to guy for advice on child rearing.

Then, in the late 1960s, Dr. Spock became known for something else - his political activism.  He even ran for president in 1972.

But Benjamin Spock had long resisted writing his autobiography. Finally, in the late 1980s, his second wife, Mary Morgan, persuaded him it was time. So, with her help, he finally wrote the book called Spock on Spock.