Cigar Makers Henry Clay and Bock Co. Recalling the Heyday Of Trenton's Cigar Industry By MARGO NASH SEPT. 14, 2003 FOR the first half of the 20th century, cigar manufacturing was an important industry in this city, right up there with ceramics and Roebling wire. Among the cigar factories in town was the Henry Clay and Bock Company, which made La Corona and other cigars out of Cuban tobacco. Winston Churchill was a loyal customer. At the company's factory here, the employees who rolled the cigars were entertained by singers. When the singers got sick, production went down, according to contemporary newspaper accounts. The story of Trenton's cigar workers, especially those at Henry Clay, is the subject of an exhibition at the Trenton City Museum. The show, ''Churchills in Chambersburg: Trenton Cigar Making,'' takes its title from the section of town where Henry Clay had its factory from 1933 to 1967, as well as from the cigars named for the com...