"The Star Trek Encyclopedia: A Reference Guide To The Future" Version 3.0 software for the PC with Windows 95/98 and Apple Macintosh (very old Macs only, not for any Mac made in the last 25 years), on 2 CD-ROMs, from Simon & Schuster Interactive in 1999.  This is the two original CD-ROMs in a jewel case, with back liner only.  The discs are both in very good condition.

Buyer pays $4 S/H in the U.S.