Star Tribune Books Editor Laurie Hertzel began noticing the Little Free Libraries around her Twin Cities neighborhood. Little Free Libraries are compact, self-service stations where readers can share books (earlier this summer, a 9-year-old in Kansas operated a similar Little Free Library until his Kansas town forced him to remove it). Hertzel, meanwhile, began photographing the libraries she came across, including a modified bicycle and another that replicates the house it sits in front of.