Who did you contact at Phillips 66? A lot of time it is about finding the right person in the right department. Someone at he Phillips 66 Company Museum is more likely to be of help than the company's generic "contact us" email address.

That is awesome that it is still standing. I work in the cultural resource field, and that building looks very intact aside from the roll up doors. You should check with the local historic preservation society with your story and see if it can be added to the national register of historic places. Florida Division of Historical Resources may also be a help in finding out who to contact about various details and can assist with placement on the National or State Register of Historic Places.

Knowing the exact address, the courthouse should have documents for the land transfers that can pinpoint exactly when it was sold to Phillips 66. In case there is competition with another location in Fl as to being "the first". It can also be useful to know how the company was listed/named at the time in legal documents which can be helpful if you want to dig into it more with local and state newspaper searches.

Neat story and super cool that it is still standing. Let us know what you find.