 Over the next decade and a half, Brooks, who became Siegler's first president, established a reputation for supervising numerous startling acquisitions, Hallamore Manufacturing Company, an electronics firm, became Siegler's first acquisition.During the 1960s, the company expanded rapidly.Lear Siegler Incorporated was created as a result of the 1961 merger between the Siegler Corporation (Los Angeles) and Lear Avionics Inc. (of Santa Monica, also known as Lear Inc.).