Ingram Library Services and Penguin Random House have announced a print-on-demand program designed to supply libraries with popular backlist titles. After researching which high-demand books often become unavailable, particularly in libraries’ preferred hardcover format, ILS and PRH have created a set of 200 titles by authors including Harlan Coben, Janet Evanovich, Lisa Gardner, Yaa Gyasi, Paula Hawkins, Debbie Macomber, Anne Perry, Nalini Singh, Gary Shteyngart, and others, whose work will be made available through Lightning Source.