New ADNI-1 3T Cross-Sectional FreeSurfer (5.1) dataset is available in the Download section of the ADNI archive.

The dataset is called ‘UCSF – ADNI-1 3T Cross-Sectional FreeSurfer (5.1) [ADNI1]‘, version 2015-05-20, and can be found under Imaging, MR Image Analysis.