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Image Number D208-1 Portrait of pioneering USDA entomologist Charles Valentine Riley. Photo by the National Agricultural Library. To request a high-resolution digital image, please contact the National Agricultural Library, Rare and Special Collections by calling (301) 504-5876 or e-mailing speccoll@nal.usda.gov. Para obtener mas información, se puede comunicar con la Unidad de Fotos Raras y Especiales por correo electrónico (speccoll@nal.usda.gov).  640 pixels wide: (d208-1.jpg)   Please visit our Image Gallery


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