May 3, 1972 ; 11¢ Multicolored ; National Parks Centennial Issue- City of Refuge - Hawaii ; C84 <small>33463</small>
Bureau of Engraving and Printing
U.S. Postal Service; National Postal Museum: <a rel="nofollow" class="external text" href="http://arago.si.edu/record_184248_img_1.html">National Parks Centennial Issue</a>