Hickenlooper did not run for another Senate term in the 1968 elections. He died three years later while visiting Shelter Island, New York, and is interred at Cedar Memorial Cemetery, located in Cedar Rapids, Iowa. | Hickenlooper did not run for another Senate term in the 1968 elections. He died three years later while visiting Shelter Island, New York, and is interred at Cedar Memorial Cemetery, located in Cedar Rapids, Iowa. |