On page 279, Rencher says concerning this data: The data were collected by G. R. Bryce and R. M. Barker (Brigham Young University) as part of a preliminary study of a possible link between football helmet design and neck injuries.  Six head measurements were made on each subject.  There were 30 subjects in each of the three groups.
Raw data obtained 03apr2007 from the file T8_3_FOOTBALL.DAT found within the zip file ftp://ftp.wiley.com/public/sci_tech_med/multivariate_analysis/multivariate.zip
Data from Table 8.3. Head measurements for three groups, pages 280-281 of Rencher, A. C. 2002. Methods of Multivariate Analysis. 2nd Ed. New York: Wiley.