John D. Clark, an Iowa native who founded Prudential Overall Supply in Los Angeles in 1932, had a straightforward outlook on business: “If a job’s worth doing, it’s worth doing right.” That was an adage of Clark’s that his son Dan recalled during a 1991 memorial service for his father. Prudential, commonly known as “POS,” is now in its second generation of family ownership. The company has grown from a one-man operation laundering industrial uniforms (mainly by hand), to today’s large company that serves thousands of customers with industrial uniforms and related textile services in Arizona, California, Nevada, New Mexico ...