Buck was vice-president of the American Mathematical Society and the Mathematical Association of America (MAA), whose "Committee on the Undergraduate Program in Mathematics“ (CUPM) he founded and from 1959 to 1963 chaired.
Buck war Vizepräsident der American Mathematical Society und der Mathematical Association of America (MAA), deren „Committee on the Undergraduate Program in Mathematics“ (CUPM) er begründete und 1959 bis 1963 vorstand.