Categories to use for narrow down searches:
“Annotated Bibliography, rather than “Bibliographies”, Built Environment Description
Tags for Annotated Bibliography:
[Subject], ABlfml, AB1-2-3, altsprf165
Tags for Built Environment Description:
BED1-2-3, Historical, Cultural, Political, [Location]
“Major projects” as parent category, with the others underneath

Think about tags and categories that you can use to make your information easily accessible/searchable