I just read an article that refers to an organization by its acronym. Yes, if an organization has an acronym, it is usually included in the directory, and you can search for it. I'm pretty sure this organization exists. Sometimes the word of is used instead of for, or vice versa. The name may use College instead of Association.
Organizations merge, change names, and discontinue operations.
These organizations are listed by their old names for at least one year, with directions to their new identities. The directory has a strict policy of only listing organizations that have been directly confirmed. If an organization is very hard to contact, they may not be listed. The organization may be too new. Our source, Susan M. Detwiler, evaluates new organizations on a regular basis, but sometimes an organization gets missed.