http://www.identityarchives.com/
“Welcome to the Identity Archives Project – a keyword-searchable database of logos and brand identity designs from around the world. … There’s no need to register, and use of the database is free and open to designers, brand managers, marketing professionals, educators, students, brand identity design enthusiasts, and the general public.”–From the Web site. Also from the Web site: “If you are planning or designing a new logo, researching brand identity design, or exploring the design landscape of your region or industry, the Identity Archives Project’s database will be an immensely useful tool for drilling-down into the descriptive, subjective, and conceptual elements that make each logo design unique (or not).”