This is clip art of the Miskatonic University "Wings Over Antarctica" logo from the 1930 expedition to the Antarctic. It's released under the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License for your use. If you need the logo in a different format drop me an email and I'll see what I can do. I also have copies of the logo in the open-source vector .svg format, as well as .eps, and I'll post links to them as soon as I find a host.
High Resolution (300 dpi). Click to view file, then save.
Medium Resolution (150 dpi). Click to view file, then save.
Low Resolution (72 dpi). Click to view file, then save.