18 images 22 or caps 20 that include replicas of these coins or other images 24 that relate to the relevant olympiads may also be provided similarly books 10 with generalized themes that relate e g to u201c the world series u201d or to any of the numerous other professional college or other amateur sports championships or other events may be used to display caps 20 or coins that relate to those themes books 10 about animals cars monuments movies broadway shows or other plays and various other events could also be provided to display collected related coins or to display caps 20 that relate to those themes 16 referring now to fig4 aperture s 18 may be provided on the exterior of book 10 as illustrated in fig1 or on the interior cover 32 of either front cover 12 or back cover 14 information other than that which identifies the theme may also be provided on these covers thus a paragraph that contains information about the theme or a picture related to the theme may be provided on either side of either cover in the preferred embodiment of the invention book 10 will include one or more sheets 36 of paper one or more of sheets 36 may be blank or all sheets 36 may contain text and or pictures that describe or otherwise relate to theme 16 the coin collector may for example use blank sheets 36 to provide information about his or her personal experiences with the item or person related to theme 16 thus blank sheets 36 in a book 10 with a geographically related theme may be used to record information about one 39 s own observations thoughts or experiences while visiting or studying.