AFTER YEARS OF DELIGHTING READERS with his City of Dust blog, John M. Mulhouse packs his knowledge of small towns and photos of iconic buildings into a book, Abandoned New Mexico: Ghost Towns, Endangered Architecture, and Hidden History (Arcadia, 2020). Arranged in road-trip style, the text avoids the “ruin porn” afflicting too much of social media, instead finding the stories of people and places—often from those he met while scouring the state’s less-traveled byways. His photographs add intrigue and serve as a historical record. Sometimes, he writes, when he returned to a favorite site, what he once saw had vanished.