This paper is an extended series of appendices to the report "Exploring the T.R.Q.: An Assessment of the Effectiveness of the Teachers' Rating Questionnaire," Report Number 123. It should be most useful to those familiar with multiple regression analysis and factor analysis and wishing a more complex record of the statistical procedures originally employed. This supplement takes a precise look at estimation of reliability coefficients from delayed retest data, indices used in evaluating theoretical distributions and analysis of the correlation matrices of the TRQ questions. (Author)