Available here are files containing data from the Johnson (2014) JRP study and documentation for those files.
IPIP300.dat contains 307,313 cases of item responses to the IPIP-NEO-300 in ASCII format. IPIP300.por.zip contains those data in portable SPSS format. DAT300.doc is a MS Word file that describes the formatting of these data files.
IPIP120.dat contains 619,150 cases of item responses to the IPIP-NEO-120. IPIP120-.por.zip contains those data in portable SPSS format. DAT120.doc is a MS Word file that describes the formatting of these data files.