United States Commemorative Postage Stamp Honoring American Naturalist and Conservationist John Muir,
Instrumental in the Establishment of Yosemite National Park and Preservation of the Giant Sequoia Tree Regions,
Issued April 29, 1964 in Martinez, California,
First Day of Issue Cover, FDC, Artmaster Engraving Cachet, Unaddressed,
Cover in Removable Transparent Poly Sleeve and Mailed With Protection,
Made in the USA
Genuine First Day of Stamp Issued Cover Cancelled on the First Day of Issue Date by the U.S. Postal Service,