Hello George!
Are you familiar with Family Search? That is another website with a collaborative family tree that is free to use- you just have to create an account. Hint: You should never feel forced into disclosing detailed and accurate information. For example, when setting up an account on Family search, you don't have to connect yourself to the family tree in order to use it. Once you sign into Family Search, you can search for your gr grandfather on the FS tree his Family Search profile is https://www.familysearch.org/tree/person/details/KV27-W34 and his tree view is https://www.familysearch.org/tree/pedigree/landscape/KV27-W34 There are some family photos over there, though none of your gr grandfather. If you are already in the Family Search profile of your gr grandfather, if you click on any of the tags of the collaborators who have attached records to the profile, you can send them a personal message and ask if they have any photos.
If you decide to upgrade to Wikitree genealogist, you can add the Wikitree Sourcer app to your browser. It will create a citation for you when you open/"view" a document on Family Search - then you can paste the citation into a Wikitree profile with one click - it will be formatted for you and everything!
*Sorry for being Captain Obvious! I see that you have contributed photos to Family Search profiles of your family members. I will leave the basic info here for those who may be new to how to coordinate between Family Search and Wikitree.