North of Boston is like a concept album. Sandwiched between the prologue of “The Pasture” and the epilogue of “Good Hours” are these snapshots of life, almost as if we are walking through the eponymous area with Frost as he reminisces on the pictures. By the time the walk is over you feel full, and as if you have lived in this area forever. As a concept it works; everything here is great, but there are few standalone poems that ask to be reread.