Free item to national parks on MLK Day. It`s the first of only four fee-free days in 2018
(LA Times MLB)

National parks and national forests across the U.S. that charge entrance fees will be free for visitors Monday in honor of Martin Luther King Day. However, the number of fee-free days at national parks has been cut to four in 2018: Monday (Martin Luther King Day), April 21 (first day of National...