Delboy,
I'm sure you're right about your first visit being in 1965. However, I think your photos of the cars are from '67.
The GT40 is the Ford GT Mk II B entered by Ford France, and driven by Jo Schlesser and Guy Ligier in 1967. No doubt about that. It retired after 183 laps for obvious reasons.
I think the Chaparral is the Hill/Spence 2F car which won the BOAC 500km at Brands Hatch later that year. Could possibly be the Bob Johnson/Bruce Jennings car.
The Porsche looks like a 910 - they first appeared in 1967. I think it's the Rolf Stommelen/Jochen Neerpasch car - finished 6th.
By the way Delboy - when do you move house to France - and to where, exactly??

And the other picture....

Well yes I do have access to documentation. You have some historic photographs of the aftermath of the accident at the esses in 1967. Here is a translation of part of an article in a French magazine which I translated last year:

In  1967,Ford were up against Ferrari again:  the two Mk II s were beaten at Daytona by the P4s. The all-new Mk IVs had their revenge at Sebring. This time, Andretti was teamed up with McLaren. And they won for Ford, ahead of the MK IV of Foyt - Ruby, after a tough battle with the Chaparral 2 F of Jim Hall and Mike Spence (holding second for a long time, they retired with a broken engine). At Le Mans in June, Mario teamed up again with  Bianchi . Ford beat Ferrari again (Gurney-Foyt were the winners.). This time, Andretti (who set the lap record along with Hulme in 3:23.6 : 148.75 mph, and was running in second place), was involved in an accident at the esses as night fell. His brakes locked as a result of badly fitted pads, sliding wide, he was hit by McCluskey and Schlesser. A tough blow for Ford with three cars retiring at once. Mario had two broken ribs and his shoulders were badly bruised by his safety harness during the impact.what happened next was, sadly,  typically American. Before the start, Ford's team management, organised like the army for the Normandy landings in 1944, told their drivers: "above all, if you're involved in an accident, wait for the Ford team doctor to take care of you and don't have anything to do with the French doctors." (thanks for that!). Seeing Mario injured, Roger McCluskey listening only to his best instincts, his patriotism and the orders from Dearborn immediately threw the French Red Cross ambulance keys into the woods, so that the 'froggies' couldn't carry his friend off to his probable death. Apparently only Americans can care for the injured. As long as they work for Ford. Let's move on -

In fact the accident happened, not at nightfall, but at dawn. In your photographs the car on the left (No 3) is Andretti's car, with McCluskey's immediately in front of it. Schlesser's car is the No 6 in your previous photo.