After her son disappeared from Hong Kong into China, Yu Lai Wai-ling embarked on a lifelong search to bring him home. The photographer Billy H.C. Kwok convinced Ms. Yu to tell her story, assembling images of grief and resolve.
Aperture’s issue on craft features photographers who make pictures the slow way—building camera obscuras, creating photograms, and laboring in traditional darkrooms to make handmade, unrepeatable forms.