We recommend making sure every organization on your resume has a high-quality logo.
Sometimes you just need to update the name of the organization so that it links properly to the organization's profile on LinkedIn.
If an organization exists consider contacting them to ask to improve their logo.
For example, Tilek is an alumnus of the American University of Central Asia (AUCA). AUCA had an ad saying something like “Check out our new campus” as a part of their logo. Tilek messaged them asking to change it to a proper logo. He explained that it is a tiny, but important detail for AUCA alumni careers. They understood and improved the logo which now helps thousands of other alumni.
If organization doesn't exist or is hard to reach we recommend showing your leadership skills by creating a profile for that organization on LinkedIn. This will help not only you, but also everyone else related to this organization. Later you can transfer administration rights to the rightful owner.