A reversible notebook combines the features of accordion-folded pages and unique string binding. The accordion-folded pages allow for the continuous presentation of text or images with no area lost to bound margins. This is ideal for small presentations such as a portfolio of business cards. As another advantage, the notebook has uniform thickness rather than being thicker at one spine than the other. The string binding allows the notebook to be opened at either spine while the other spine remains secured closed. In conjunction with the accordion fold, this allows for presentation of two different sequences of content. The notebook may be large enough to use as a journal or album. For larger implementations, magnets or locks may be used to further secure one or both spines.