You could create a WikiTree free-space page and post the photos there.
If--best case--these people already have WT profiles, then you can link to their profiles.
If not, well...I'd be interested to hear what other people suggest. I'm not sure that listing a person's name on a WT page is enough to get it recognized in a Google search.
If you have the energy, you could search for the people's profiles on Ancestry (if you are a subscriber), FamilySearch, etc. and contact the PM on Ancestry or just post the photo or a link on FS.