Anatomic reference data mapping to atlas data

Hi! When looking at these reference datasets and clicking on one of the images, there is an option to show/hide the atlas buy clicking on the key icon in the upper right hand corner. When comparing the images side by side, I was wondering if there was a way to get the mappings, since it seems like the reference image numbers are shifted and scaled.

For example, if you look at the NeuN stained one and go to image 131 of 235, you’ll find that this maps to image 81 of 132.


Likewise, if you go to the AchE stained one, image 131 of 237 maps to image 78 of 132.

I tried downloading the metadata for these reference datasets, but I didn’t see anything that would indicate a mapping.

Where might I find this mapping?

Thanks!