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William Miller (left) and Ira Sprague Bowen looking at large print of Orion Nebula. Copied from life photo of J. P. Eyerman. Both Miller and Bowen are wearing suits, neckties and eyeglasses. A blackboard is on the wall behind them. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.