It was 150 years ago this May that Louisa May Alcott’s publisher, Thomas Niles, asked the author if she would write a “girls’ story.” She was reluctant to. “I don’t enjoy this sort of thing,” she wrote in her journal at the time. “Never liked girls or knew many, except my sisters; but our queer plays and experiences may prove interesting, though I doubt it.” So she wrote about what she knew: a family of four tight-knit sisters who weren’t afraid to be themselves, living in Concord, Mass., during the Civil War. Neither Alcott nor her publisher were enthused about her first go at the story’s beginning, but she decided to keep writing (“lively, simple books are very much needed for girls, and perhaps I can supply the need,” she wrote) and the enthusiasm of Niles’ niece convinced the publisher to let the project go full speed ahead.