Included here are common (C), fairly common (F), and uncommon (U) occurances. Not included are rare, casual, and irregular sightings.
Santa Cruz County, California
... Reutemann[?], (Argentina) 1981 - Gilles Villeneuve, (Canada) 1982 - Riccardo Patrese, (Italy) 1983 - Keke Rosberg, (Finland) 1984 - Alain Prost, (France) 1985 - ...