| 摘要 |
Albums having variable width spines and the components thereof are described. An example album includes a first cover, a second cover, a first spine element includes a first side and a second side. The first side includes a plurality of first extensions, a first rib, and a first groove. The second side is coupled to the first cover. A second spine element includes a third side and a fourth side. The third side includes a plurality of third openings, a third rib, and a third groove. The fourth side is coupled to the second cover. To couple the first spine element to the second spine element, the first rib is received by the third groove, the third rib is received by the first groove and, as the spine elements are longitudinally moved relative to one another, the first extensions are received within a portion of the respective third openings.
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