a slip case package is disclosed for holding a book and a computer disk . the package comprises a slip case having a pocket in the interior thereof which holds the disk and a space for the book . the pocket is formed by two panels of the slip case , one of which is in the interior of the slip case . this panel includes a section which is severable from the interior of the slip case to provide access to the disk . severing the section is made relatively difficult by virtue of the size of the section , the limited space in the interior of the slip case and the location of an engageable structure by means of which the section is grasped for severing it . as a result , even though the book may be removed from the slip case and perused in a retail store by a prospective purchaser , removal of the disk is somewhat involved and requires actions which discourage theft as such actions may easily be observed by store personnel .