The Ventura was first introduced for 1960 as a new higher priced model on Pontiac's shorter full-size 122-inch B-body wheelbase, shared with the Pontiac Catalina. It was available as a four-door Vista sedan and two-door hardtop. It had unique exterior identification, deluxe wheel covers, a sport steering wheel, and distinctive tri-tone seats done in "Morrokide" (Pontiac's leather-like vinyl upholstery).
The Ventura continued in 1961 as its own model, but from 1962-70, the Ventura was a trim option on the Catalina, although cars with the option were badged only as "Ventura", with no Catalina identification. The Ventura and Executive models were dropped after 1970, and replaced by the Catalina Brougham for the 1971 and 1972 model years.
Source: Wikipedia, 2011