Thomas Y. Crowell, New York, 1942, 73^rd pr.  Hard cover, 48 pages.  Boards show edge and cover wear, some soil and stains, spine ends bumped, corners worn with bits of board exposed.  Binding sound.  Off-setting to front and rear paste-downs and end papers; interior clean and unmarked with occasional age spot and one lower edge tear.  ‘A paper read before the Philadelphia Branch of the Association of Collegiate Alumnae’, with Working With Giant Power being a 7^th pr in 1942 ‘To the invisible audience’.