I note that augenblick.org has an entry for RPI Hockey FAQ, which contains the following:
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3.5 What records do the Engineers hold?
Open to debate is whether the Engineers hold records for the longest Division 1 winning and undefeated streaks. RPI won 30 straight games during the 1984-85 season, but one game was against the University of Toronto, a Canadian team. Continuing into the 1985-86 season, RPI was undefeated over 38 games, including 2 wins over Toronto. Depending on how these records are defined, RPI may be the holder.
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If the games against the University of Toronto don't count, I should think that would still leave RPI with a 29-game winning streak during 1984-85 and a 36-game undefeated streak over two seasons.
Unless there is another NCAA team that has won as many as 29 in a row or gone undefeated in as many as 36, why should there be any question as to whether RPI holds these records?