Logotypes have been used to mark documents since 2300 BC!
Source: Wikipedia - graphic mark or emblem
Logo Design meets Science
Advertising your business can be fun and exciting, but not if your sales collateral (business cards, brochures, flyers) is handicapped by a less-than-awesome logo design. Science proves this small oversight can negatively impact a reader's opinion about any message your logo is attached to.
I specialize in brand design that is all about creating a unique business identity that tells everyone, "You can trust us, we're great at what we do".