The letters are mostly of interest to the converted: there’s no laying out of the principles of the art. We see Berryman griping, ranting, heartbroken; repetition abounds, of witticisms, of complaints — fascinating to those hooked on his work, but he’s no transcendent corresponder. Nor is there scandal; just one letter, incongruous in its loving isolation, to Chris, the woman who inspired his initially self-suppressed sonnets.