Here's a bunch of pictures I took from behind the fence. The ones with Sears Point when it could actually be seen in green were taken at various times in 1990-91. The brown ones are from the summer National in 1993 or 1994. Apologies if I got people's names wrong, I don't have the entry sheets in front of me. 
Steve Hussey:
Mike Kearney (not 100% sure):
Noel Hayward:
Mike Kearney maybe. This might have been taken at a Driver's School.
Jack Holdaway:
Turn 7 and Jim Kilpatrick's (?) Porsche 356:
Unknown Alfa Driver at Driver's School / Regatta, perpendicular to the racing line (pretty sure it's not Al Leake Jr.):
Larry Moulton:
Rich Bontempi leading Terry McCarthy:
Pratt Cole:
Bruce Ackerman's tailight, Moulton again, Cole, the #18 Spitfire that was always fast, Tom Clayton, Chuck Forge, Dan Huntsman, and others I don't remember.
Turn 3a:
This might be the ex-Brian Richards 510, a very pretty one from Canada:
Steve Hussey:
Mike Kearney (not 100% sure):
Noel Hayward:
Mike Kearney maybe. This might have been taken at a Driver's School.
Jack Holdaway:
Turn 7 and Jim Kilpatrick's (?) Porsche 356:
Unknown Alfa Driver at Driver's School / Regatta, perpendicular to the racing line (pretty sure it's not Al Leake Jr.):
Larry Moulton:
Rich Bontempi leading Terry McCarthy:
Pratt Cole:
Bruce Ackerman's tailight, Moulton again, Cole, the #18 Spitfire that was always fast, Tom Clayton, Chuck Forge, Dan Huntsman, and others I don't remember.
Turn 3a:
This might be the ex-Brian Richards 510, a very pretty one from Canada: