The View-Master's journey began with photographer William Gruber's camera rig and Sawyer's Photographic Services, which together aimed to create beautiful, accessible 3D souvenirs. The U.S. military was one of its biggest early customers, purchasing over six million training reels to help soldiers identify everything from aircraft to ammunition during World War II. This military contract not only gave the company a financial boost but introduced the device to a generation of servicemen, who brou