Contributors ############ We are very grateful to the many people who have made our hybrid work possible. Some of the key contributors are: * **Silei Zhu:** project lead - involved with hybrid dMRI-microscopy pipeline development, processing pipeline and analysis, conceived of and performed analys. * **Istvan Huszar:** developed the TIRL software and protocol for co-registration of the MRI-microscopy data. * **Michiel Cottaar, Greg Daubney, Taylor Hanayik, Alexandre Khrapitchev, Rogier Mars, Jeroen Mollink, Connor Scott, Jerome Sallet, Adele Smart :** were involved in the acquisition and curation of the BigMac data * **Nicole Eicherta:** advised on the cortical ROI drawing. * **Saad Jbabdi:** study conceptualization. * **Amy Howard:** project oversight - study conceptualisation, developed the hybrid dMRI-microscopy pipeline, advised on all processing pipelines and analyses; evaluated the results. * **Karla Miller:** project oversight - supervised all aspects of the method development, analysis, and pipeline development