The purpose of this user's manual is to document the procedures used to collect and process postsecondary school transcripts for members of the National Longitudinal Study of the High School Class of 1972 who had attended any postsecondary institutions since leaving high school. In addition, this manual will provide researchers with the technical information necessary for using the public release data files containing transcript and other data. The five chapters include: (1) introduction to the longitudinal studies program; (2) summary of the procedures used to collect transcripts; (3) description of the Computer Assisted Data Entry program; (4) basic technical information required for use of data files; and (5) description of the procedures used to construct sampling weights for use in computing population estimates. A codebook offers reproductions of records for these levels: student, transcript, term, and course. The appendices include a list of schools, postsecondary school codes in numerical and alphabetical order, course subject codes in numerical order, data file record layout, and frequency distributions for student-level, transcript-level, term-level, and course-level variables. (JAZ)