Harvard's seal in Metafont: 
This Metafont code may be used to include the Harvard seal within TeX and LaTeX documents.
The Metafont proof above was created using the TeX Live commands:
mktextfm gray ; mktextfm black
mf '\mode:=proof; mag:=360/2602; input harvard64.mf'
gftodvi harvard64.360gf
dvipdf harvard64.dvi
The TeX file hlogo.tex produces the seal.
\nopagenumbers
\font\hseal=harvard64
\hbox{\hseal H}\bye
One example.