Abstract: An arrangement for enabling a person to view/observe alphanumeric/pictorial information provided upon a surface of an information storage cassette while being located within an associated case, container, enclosure, housing or the like that is adapted for placement in one-above-the-other relationship and/or in side-by-side relationship in such manner that the information to be viewed/observed is out of direct line of vision of the viewer thereof. The library case, container, enclosure, housing or the like incorporates means for establishing at least one optical path within the case, container enclosure, housing or the like and from the information to be viewed and to the associated part/parts of the case, container, enclosure, housing or the like which is/are presentable in a line of direct view of said viewer.