This week on The Reading Life: Wayne Wiegand, co-author with Shirley Wiegand, of “The Desegregation of Public Libraries in the Jim Crow South: Civil Rights and Local Activism.” We’ll also hear from novelist Silas House, whose new book is “Southernmost.” Audio extra: Here’s what’s on tap in the literary life this week: Barbara Ewell and Teresa Toulouse discuss and sign their co-edited book of essays, “Sweet Spots—In-Between Spaces in New Orleans,” Sunday June 17, at 3:30 p.m. at Garden District