nFor earlier rounds, the codebook supplement was printed in hard copy. Printed codebook supplements can be ordered on the NLS order/download page and can also be viewed in PDF or HTML format from that page.
nFor the last several rounds, the codebook supplement information has also been converted to HTML format and hyperlinked to the codebook pages for individual variables.
nBeginning with the round 20 (2002) survey of the NLSY79 and the round 6 (2003-2004) survey of the NLSY97, the codebook supplements are available only in HTML.