This attractive conservation-themed Cinderella stamp set was issued by The Wilderness Society, Washington D.C., promoting preservation of America’s natural landscapes. The labels feature iconic wilderness locations including Big Sur Coast, Quaking Aspen (Colorado), Animas River Canyon, Columbine at Maroon Bells, Sierra Ancha Range, and the Hoh Rain Forest. Produced as promotional poster stamps rather than postal issues, these items are highly collectible within thematic collections focused on nature conservation, environmental campaigns, and U.S. scenic landscapes. Complete multi-design sets in fine condition are particularly desirable among Cinderella and thematic collectors.