Tempo changed in February 1993 to 96 BPM from 100 BPM in the 1989 American Roller Dance Skating, Book I. Also some changes in the notes text.
source: USARS 2013 Dance Descriptions and Diagrams
source: CEPA 2009 Dance Book, Compulsory Dances for Europe
source: 1973 USAC/RS AmericanRoller Skate Dancing Part II