Abstract: A paper feed system for an image reproduction machine, representatively a printer, has a shelf member disposed within the machine housing and rotatably carrying a turntable on its upper side. Two transversely oriented pairs of diametrically opposite upper and lower paper trays are removably supported on the turntable, with portions of the upper trays overlying the lower trays. The turntable may be rotated to vertically interpose a selected one of the four trays between a stationary picker roller and a lifter structure positioned beneath the picker roller. The lifter structure has a portion which moves upwardly through a shelf opening, and a turntable opening aligned therewith, to engage the selected tray and lift it toward the picker roller to bring a paper stack held in the tray into engagement with the picker roller which operates to successively remove sheets from the stack and deliver them to the machine's paper feed path.