Silverstone 750 Motor Club, Saturday 16 May 1964, Whitsun race meeting
Sports and G.T. cars:—Heat 1:
1. A.H. Cook (Rejo) 79.74 m.p.h.
2. M. Rigg (Lotus-Maserati)
3. J.M. Haynes (Elva Courier)
Fastest lap: Cook, 82.46 m.p.h.
Sports and G.T. cars final:
1. D. Cunningham (E-Type Jaguar) 82.65 m.p.h.
2. J. Miles (Diva)
3. M. Rigg (Lotus-Maserati)
Fastest lap: Cunningham 84.63 m.p.h.
Birmingham Daily Post, Monday 18 May 1964
RGDS RLT
By chance this was the first meeting I ever went to. I have a programme, but no results, nor entries for the second race you mention, the Sports & GT final, race 8 that Saturday.
Rigg
Race 9 was the Libre event, and the entry includes the Lotus Maserati, entrant W Rigg, driver M Rigg.
The programme entry for the other race you list , the first of the day, doesn't include the Lotus Maserati, nor Mark Rigg. But there is a Rigg car, a Ford Cortina, entrant W Rigg, driver C A Rigg.
Race 5, Heat 1 of the Saloons, features W Rigg in a 3.8 Jaguar.
Libre Race entry
Chris Irwin in an F3 Merlyn
Cook in the Rejo
Chris Summers in his Lotus Chevvy
Alan Eccles - Cooper Chevvy
Alan Stubbs - Cooper Chevvy
Mark Rigg - Lotus Maserati
K (Ken?) Wilson - 2.5 BRM
Frank Lockhart - Rover Special
Roger Sparkes - Marcos Volvo
D Cunningham - E Type
T (Tony?) Goodwin - F3 Lola
R Caldicott - TVR Grantura
etc
And amongst the reserves:
Lord Cross - AC Cobra
Peter Hawtin - Cooper-Daimler
Mouth-watering!