Original oil and gas trade magazine vintage ad for THE RALPH M. PARSONS COMPANY, of Los Angeles, CA. 95 Projects, 17 Customers and more Jobs Awarded from the same Customers. Whether your next facility is a catalytic reformer, alkylation unit, chemical plant, crude unit, sulfur recovery plant, fluid coker, or any other chemical or petroleum facility, Parsons' staff of specialists is ready to serve you. This unique old 1959 four-page gatefold petroleum process refining equipment advertisement would display beautifully matted and framed.