Joel Silver, along with fellow students Jonny Hines, Buzzy Hellring, and others, further developed ultimate beginning in 1968 at Columbia High School, Maplewood, New Jersey, USA (CHS). The first sanctioned game was played at CHS in 1968 between the student council and the student newspaper staff. Beginning the following year evening games were played in the glow of mercury-vapor lights on the school's student-designated parking lot. Initially players of ultimate Frisbee (as it was known at the time) used a "Master" disc marketed by Wham-O, based on Fred Morrison's inspired "Pluto Platter" design. Hellring, Silver, and Hines developed the first and second edition of "Rules of Ultimate Frisbee". In 1970 CHS defeated Millburn High 43–10 in the first interscholastic ultimate game, which was played in the evening in the CHS's faculty parking lot. Millburn, and three other New Jersey high schools made up the first conference of ultimate teams beginning in 1971.