Two celebrated, decades-old San Francisco bookstores are set to close this year, marking the end of an era for Alexander Book Company and The Magazine. Bonnie Stuppin, one of the owners of Alexander Book Company, said the SoMa bookstore will likely shutter toward the end of April after 32 years of service. The reason, she says, is because downtown San Francisco offices aren’t nearly as packed as they used to be. “We’re not seeing enough customers to justify opening the doors and turning the lights and paying the staff to come down,” she told SFGATE. “I don’t know what needs...