This antique stereoview card features a stunning early photographic view of Old Faithful Geyser erupting in Yellowstone National Park. Produced by Keystone View Company, this card includes dual sepia images designed for stereoscope viewing, creating a 3D effect when used with a viewer. The reverse side contains detailed historical and geological information about Yellowstone, making it a wonderful collectible for photography enthusiasts, national park lovers, and vintage ephemera collectors. Details: Original antique stereoview card Subject: ?The Most Famous Sight in Yellowstone Park ? Old Faithful Geyser in Action? Publisher: Keystone View Company Sepia-tone photographs Informational text on the reverse Approx. 7" x 3.5" Condition: Good antique condition with mild wear consistent with age. Images remain clear. Back text fully readable.