Founded in 1989 by husband-and-wife team Louis Plummer and Sidney Brown, PhotoAssist was born in response to a simple question from the U.S. Postal Service: “What do you know about Bill Pickett?”

Starting with a single photograph, we learned everything there was to know about this famous bulldogger and rodeo performer, helping the Postal Service correct a major error in the historical record—and soon becoming one of the most trusted photo research houses in the United States.

Since then, we’ve worked with experts in hundreds of fields to help international publishers, major museums, film companies, and government agencies produce work that’s accurate, well documented, and visually rich. We still love when someone asks: “What do you know and how do you know it?”