Finding Aids are guides for collections of archival material. They list material in boxes, usually organized in series of like materials. Materials are most often described at the folder level, not the item level. If you would like to know more about the contents of a folder, you can email email@example.com.
It is essential to read the main page of each individual collection or record group group. In each individual record group you can search the collection using the navigation bar on the right of the screen (or at the bottom depending on your screen size). You can search within that collection using the search bar or you can browse by expanding the different headings (series title) in the navigation bar. To expand a series title, click the arrow next to the title.
You can also search associated names, events, organizations, locations, etc. in the main finding aid page for all Smith College Special Collections (https://findingaids.smith.edu/) navigation bar and see what comes up.