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Always capitalize the first word in each folder title.
Using a Scope and Content tag for description at the folder level
Schlesinger practice has been to provide extra descriptive information about a folder as part of the folder title (generally after the date). Another option is to create a <scope> tag at the folder level and include more robust description of material within that tag. Decisions about how best to handle description should be considered as part of the survey and appraisal process. Some collections lend themselves to robust description (diaries, A-Z correspondence folders with many correspondents of note), some do not.
Labeling Folders With Descriptive Headings
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