Does anyone else find it confusing that "engine reference manuals" contains airframe maintenance manuals and "Pilot operating handbooks" contains parts manuals? Would it not help to add a few more categories and reorganizing the documents that are all ready there.
Some examples of new categories would be like:
Parts manuals
Mooney Service Manuals
STCs and 337s
ADs and SBs
Checklists
I would be more then happy to help catalog if able.