The logo for California Institute of Technology.
<a href="https://en.wikipedia.org/wiki/w:en:California_Institute_of_Technology" class="extiw" title="en:w:en:California Institute of Technology">California Institute of Technology</a>
<a rel="nofollow" class="external free" href="http://identity.caltech.edu/standards/visual/logo">http://identity.caltech.edu/standards/visual/logo</a>