In 1966, Lyndon Johnson was president. The Beatles were at the top of the charts. The Civil Rights Movement marched on, and the U.S. involvement in the Vietnam War deepened.
The country was different then. The population was smaller and, on average, younger. Life expectancy was seven years shorter. And if you were old, you were more likely to be poor. Health care was less expensive, but many of today's most beneficial treatments, surgeries, and prescription drugs for a variety of diseases had not yet been developed.