Williston Cox just sent me a link to some fabulous photos of racing at Laguna Seca from the good ol' days.  Willie is the son of Madison Cox, who I had raced with in the BOTT and who I had miss identified in the crash sequence I previously posted from Laguna.
http://glennmorgan.smugmug.com/Motorcycles/Laguna-Seca-Early-80s/22300908_xkWTtv/1781907407_bkJ36SG#!i=1781907135&k=pWgNcst
These photo have to be from at least two different years as we see Eddie Lawson on both Kawasakis and Yamahas and Freddie Spencer on a Yamaha and Hondas.  My guess is 1981 and 1982.  F-1, Superbikes, 250's, sidecars and BOTT.  There's one of you faithful scribe on the Team Obsolete, Rob North framed, 909 XR Harley  in addition to Jim Adamo on Reno Leoni's Ducati and a couple of Madison Cox on the Darkroom Ducati.  But, also great candid shots of such greats as Roberts, Spencer, Lawson, Baldwin, Cooley, Don Vesco and Dave Aldana, Kel Carruthers working on Roberts Yamaha out of the back of a box van and great overall shots of the track and crowd.