How to Organize Survey Data

It would be a great idea to have past projects represented on a map for easy recall during the planning phase of a new project. I would love to have Google Earth with pushpins representing past projects. You could click on a pushpin, or maybe hover over one, to bring up a project number. Why set new control, or locate property corners, section corners, etc. that are already in your database? What kind of system do you use?