Sarah Bigham begins her impressive collection, Kind Chemist Wife: Musings at 3 a.m, with the poem “Gettysburg” — an excavation of memory as much as it is an examination of it. The poem closes with the lines “Beauty / or not?” — a fitting description of the collection as a whole: equal parts witty and wise, breezy and poignant. It’s a collection that focuses not only on life’s snapshot, shiny moments but on the kind of invasive memories that plague us in the early morning hours.