Abstract: A portable book rack including a pair of side bars having facing surfaces joined together at their ends by a pair of cross bars. A bookend is pivotably and removably connected between each end of the side bars so as to pivot from a substantially upright position supporting a plurality of books therebetween to a flat position for storage and/or shipping substantially coplanar and between the side bars. The facing surfaces of the side bars are provided with one or more pairs of facing and aligned vertical slots for receiving one of the bookends to adjust the relative distance between the bookends. Alternatively, an additional bookend can be used as a divider between the first pair of bookends by insertion between one pair of the facing and aligned vertical slots formed in the side bars.