I inherited logos and a general “look and feel” at a couple recent professional homes. Neither, however, had much internal discipline in enforcing any kind of consistent use. As expected, this resulted in inconsistent brand awareness across the organization and their chapters, publications and divisions.
I created (and enforced) full branding guidebooks for both. One is not available publicly so I present it in a slightly-redacted form below.
The Academy of Management has slightly revised theirs, but it is still in use and available on their website.