This font was developed for Metafont-for-SAIL, and the sources are no longer available (they wouldn't help much even if we had them). It is (just about) possible to use the fonts — available solely as a fixed-size 300dpi copy — as they are.
The author is Donald E. Knuth.
License: knuth Version dated: 1992-09-02 Catalogued: 2014-05-07