Not everything in Louis Armstrong’s world was wonderful, and an Emmy-winning documentary, “Little Satchmo,” explores many facets of the jazz icon’s life. Green Book of Tampa Bay, together with St. Pete’s Woodson African American Museum, Pinellas County Urban League, and others, screens the film produced by late Bay area filmmaker Lea Umberger and then opens the floor for a talk with Armstrong’s more-or-less invisible daughter, Sharon Preston-Folta, who lives part-time in the Bay area. “The acclaimed documentary is based on Preston-Folta’s memoir of the same title, detailing how Sharon, the product of a two-decade love affair between Satchmo and Harlem dancer Lucille ‘Sweets’ Preston, had no option but to harbor and conceal her identity for decades before making it public,” a press release states.