PERSONNEL: Changes of the Week, Mar. 31, 1958

¶ Carl J. Gilbert, 51, president of the Gillette Co., stepped up to board chairman, replacing retiring Joseph Spang Jr., 65, who pushed Gillette's sales from $16 million in 1938 to more than $200 million in 1956. A Boston lawyer Harvard Law School). Gilbert joined Gillette as treasurer in 1948. became president in 1956. Into Gilbert's job goes Boone Gross. 53, a Texas-born West Pointer ('26) who heads Gillette's safety-razor division. As chief executive officer, Gilbert will face a $6,000,000 sales slide caused in part by the short, straight Italian haircut, which has cut sharply into the sales of Gillette's Toni home permanents. Says Gilbert of the style: "It'll change."

¶ Frank W. Jenks, 60, president of International Harvester, will become chief executive officer when Board Chairman John L. McCaffrey, 65, retires in May. Jenks went to work for Harvester as a clerk in 1914, rose steadily to the presidency last year (TIME, Oct. 28).

¶ Paul C.Smith, 49, onetime president of the Crowell-Collier Publishing Co., was named vice president and treasurer of American Export Lines. Smith, who worked in banking before he turned to journalism, resigned from Crowell-Collier after the directors folded its magazines in December 1956 (TIME, Dec. 24, 1956).

¶ Edward L. Steiniger, 55, executive vice president of Sinclair Oil, stepped up to president, succeeding Percy C. Spencer, 64, who become chairman of the board and remains chief executive officer. Steiniger joined Sinclair in 1925, went to Venezuela in 1928. became president of Sinclair Venezuelan Petroleum in 1950. He was elected vice president of the parent company in 1955, became executive vice president last year.