In 1916, a portfolio of nine major parks was published by the United States Dept of the Interior to generate interest in them. Printed on each brochure was a map showing the parks and principal railroad connections. There were 9 parks at the time and this is the complete original 1916 set with the Introduction/Contents leaflet by Franklin K Lane, Sec. of the Interior and Stephen T Mather who was Assistant to the Secretary in Charge of National Parks at the time. The portfolio cover is printed on khaki-colored thick cardstock; the back seam is completely separated. The 6" x 9" illustrated park brochures explain each park, which were: Yellowstone, Yosemite, Sequoia, Mount Rainier, Crater Lake, Mesa Verde, Glacier, Rocky Mountain and the Grand Canyon. Also included is a 1923 edition of the Grand Canyon brochure. All 1916 pamphlets are in perfect condition: no stains, intact, well bound, odor free, no holes/tears. The cover of the 1923 pamphlet is completely split down the back, and is separated from the inside pamphlet; some corners are bent in this brochure.