this is after the driver's meeting, and 2 driver's in the first picture are in the second race Feb 17th,
Daytona Contential Race....who were they?
Yes they are in the photo above as well. Real Corvette Z06 History lesson here.
and WHO won the Contential race overall?

Daytona, Feb. 17, 1963: Driver’s meeting before the 3 hour Continental.
L to R, front to back—Front row: (by himself) Don Yenko.
2nd row: Dick Thompson (w/watch), Roger Penske, & Bill Krause.
3rd row: Jo Bonnier (beard) and Bob Johnson.
Back row: ??, Paul Goldsmith (w/black shirt) , and A.J. Foyt.

http://www.legendsofriverside.com/krause.htm

http://www.legendsofriverside.com/images/Krause11.jpg