How can I find a record of a great grandpa who my or may not have been there?

Yep, go to City Hall, just like the local DA, you may or may not get answers from them depending on whether or not they feel like answering you. I was told to email them and they never answered me, so they can pretty much go to hell as far as I am concerned.

I suggest City Hall as well....

I would go or call City Hall an they should be able to direct you.