Many of the photographs were in three-ring binders and had extensive information about the trains and stations.
The information is either on the same page as the photographs or on pages next to them.
The binders are not archivally sound so the pages are removed ...
... and the pages from the binder are put into lignin-free folders.
Notes found on binders - in this case, Binder R-1 - are copied onto the folder and ...
.. the archivally unsound binders are thrown away.
As Fred sorted and rehoused the collection, he took copious notes to ensure creation of a detailed, helpful finding aid.