Abstract: An alphanumeric color-coded filing system comprising a plurality of coded labels of different sizes having visually-perceptible characteristics corresponding the specific alphanumeric information and a folder having a front and back cover. The back cover has a unitary flap extending substantially the entire length thereof outwardly of the corresponding edge of the front cover, and the flap has a unitary tab extending outwardly therefrom along a portion of its length. The flap including the tab is marked with a plurality of placement guides corresponding in size to the front section of the labels. The placement guides on the tab are all the same size for guiding placement of labels of the same size. The tab defines a location for the placement of primary information, while the remaining portions of the flap defines locations for the placement of supplemental information.