no brake ligths

I just bought a 1968 chevelle and when i got it home i found out I didn't have any break lights on either side. I have one blinker on the driver side, and that seems to come and go too. I have check the bulbs and fuses. The ground seems to be pretty solid, any one know any way I can run down this problem.
Thanks in advance

First, pull the bulbs and look in the bulb socket for corrosion. Next replace the bulbs with new. (Your gonna end up doing this sooner than later with an old chevy.)
If you still don't have brake lights, check the fuse in the panel under the dash by the emergency brake.
If the fuse is good then it's probably the brake light switch, witch is located under the dash by the brake pedal.