The Redstone Engagement calendars feature a theme that is expressed through pictures, cartoons, and writings, one for every week in the year and a few informational essays just to read. Next year's theme is color; this year's is (of course) odysseys; last year's was maps. The illustrations are wonderful and come from a wide variety of contemporary and even ancient sources. Physically, the calendar has many virtues. It has big blocks to record appointments and reminders; pockets, for storing memos and lists; blank pages in several colors for notes to yourself (or to tear out and leave for others); and dates and labels that are printed in four languages (just in case). It is spiral-bound, so you can carry it around open to the week of your choice, and it unfailingly attracts admiring (and envious) comments whenever it is taken out of bag or briefcase. How anyone can get through the year without a Redstone Diary is beyond me.