I'm not sure if this company is still in business, since the site copyright is 1997. but I must admit, this is a good job at doing retro ;)

http://serb-art.com/index.html

I especially love Tip 2:
In a world of clip-art computer jockeys, there are still REAL artists. Choose a graphic arts studio that has talented artists on staff. Do not trust your important projects to "designers" without artistic ability, as you would not trust your car to someone who is not a mechanic, or your body to someone who is not a doctor.

(Made with a Mac none-the-less.)