<a href="https://en.wikipedia.org/wiki/Caltech" class="extiw" title="en:Caltech">Caltech</a> logo, introduced in 2014
California Institute of Technology
<a rel="nofollow" class="external free" href="http://identity.caltech.edu/logoseal/logo_usage_guidelines">http://identity.caltech.edu/logoseal/logo_usage_guidelines</a>