Typescripts; notes and notebooks; reprints; diaries; scrapbook. The typescripts (ca. 1933) include the final version of Wolcott's unpublished "Evolution of Electricity," a history of electricity and its applications, as well as various versions of the unpublished text and background reference materials consisting of reprints and typed copies of papers. The notes and notebooks (1899-1959) concern the wide range of Wolcott's interests and career, including student notes taken at the University of Wisconsin, class preparation and research notes prepared while Wolcott was on the faculty of the Colorado School of Mines, personal research notes and descriptions of processes covering topics such as electricity, relativity, atomic theory, the corrosion and volatilization of metals, petroleum production, radioactivity, x-ray testing, and Wolcott's proposal for a national clearing house of scientific information. The notes and notebooks also contain lectures, addresses, clippings, and memorabilia, as well as a synopsis of Wolcott's diaries (1927-1957). Reprints (1903-1929) are of a portion of Wolcott's thesis from the Universitt̃ Berlin (1903) and selected articles. The diaries (1902-1904) are of a personal nature concerning both teaching and daily activities. The scrapbook (1896-1926) contains clippings, letters, and memorabilia concerning Wolcott and his family.