Papers, including personal documents, correspondence, memorabilia and family trees by, or relating to, Thomas Braun's paternal grandfather Felix Friedmann-Braun's side of the family. This includes papers of, or relating to, the Fränkel family, related via Felix Friedmann-Braun's maternal grandmother Minna Braun née Fränkel (1803-1878), wife of Ignatz Braun (1803-1867).