When did the US stop making silver dollars?

There were no dollar coins produced in the United States after the last Peace dollar was produced in 1935 until the Eisenhower dollar began production in 1971. Silver was no longer used for coins in general circulation after 1964 - copper-nickel clad coinage began in 1965. The exception was Kennedy half dollars, which were 40% silver (down from 90% in 1964) between 1965 and 1970. Eisenhower dollars were produced in both clad (for circulation) and 40% silver (for collectors) between 1971 and 1976. Quarters and half dollars were produced in 40% silver for collectors in silver in 1976. Dimes, quarters and half dollars were produced in 90% silver for collectors from 1992 onward Anthony dollars were made of copper-nickel. Current Sacagawea and Presidential Series dollars are made of manganese-brass.