In 1939 and 1943, the Grenville Winthrop Bequest gave to the Fogg Art Museum at Harvard University a collection of ten paintings by the nineteenth century British artist, George Frederick Watts. It is one of the largest collections of his paintings outside of Great Britain. This study is an initial analysis of techniques and materials employed by Watts in these ten paintings. Watts' painting techniques distinguished him from his contemporaries. With the retention of fresh color in mind, Watts' explorations of materials and techniques were not limited only to paint mediums but included grounds, the grinding, type and use of pigments and paint diluents. He developed techniques that enabled him to rework and even belabor paintings over and over again without losing their freshness of color. Visual examination and instrumental methods of analysis of the collection's works were employed to determine Watts' use of materials and techniques. Primary and secondary sources (usually accounts of eyewitnesses) discussing Watts' techniques and materials were used as guidelines or helped to substantiate the results of the examination and analyses of the painting.