Though this is MUCH better than the file supplied to me, I'm afraid that we still need it to be higher res. I outputted a section of it at full size and it's too pixelated. There is a little website listed in the top right corner of the image. It looks like dws-4.me but that address doesn't work. Obviously, just purchasing the image would be the easiest route. I assumed my client had the image created but that's obviously not the case.
So back to the original question - I posted it as a job on guru.com to recreate it but I'm open to other ideas. I just need it done within the next few days.
I'd still love to know how rdmdarr found the image, also.