The Adobe Type 1 fonts, previously known on CTAN archives as the "bluesky" fonts, are now distributed as part of the AMS fonts distribution, at CTAN:fonts/amsfonts The fonts remain free: all Type 1 fonts in the AMS fonts collection are released under the SIL Open Font Licence (OFL). The fonts are currently the intellectual property of the AMS, though they were developed by Y & Y Inc., and Blue Sky Research, who jointly donated the fonts to the AMS, in cooperation with a consortium of scientific publishers. The fonts' original name arose because Blue Sky Research originally submitted the fonts to CTAN; there was no other significance to the name. The CTAN Team