Latest post of the previous page:The fatal wrecks of the 1919 Indy 500 are here:
The wreck at 2:51, looks like the #22 car, which was Wilbur D'Alene, non-fatal. Motorsportrace posted a pic, which is offline, I probably have it.
Thurman's car was #18, but appears in video to be #8. It's clearly #18 when seen from other angles.
LeCocq's car there is no doubt about, as it burned.