In the Keep of Forgetting - William N. Gates

"Keep" means a place of confinement, as in a prison or dungeon, but also something to hold on to, as in keepsake or "for keeps" or "to keep on searching." In this book of poems both meanings are in play: the puzzle, the enigma of a precious thing that's been given up for lost (or stolen), but then is found with such marvel and rejoicing.