New to Site and have ? about Bill Thomas cars

[69Chevelle L78Deluxe300]

I just discovered this great web site and would appreciate any information anyone could give me about a decal on my car. The decal says "Bill Thomas Racing Cars" and is on the drivers side rear window. I had never heard of him before I found this web site. Did people put these decals on any car just to advertise Bill Thomas? When new this car was drag raced for a couple of years and was then put in storage. It has only 8400 actual miles and has all original paint, stripe, and interior. It is a 69 Chevelle Deluxe 300 SS with L78, M22, and 4.10 posi. All the drive train appears to be original. Thanks for any information about Bill Thomas Race Cars!
Jim