Sketches by Jarosław Iwaszkiewicz

According to Wikipedia, Jarosław Leon Iwaszkiewicz (February 20, 1894 – March 2, 1980), was a Polish writer, poet, essayist, dramatist and translator. Of relevance here, from 1927 with the Foreign Ministry, first appointed the head of the art promotion section of the Press Department and later sent as secretary of the Polish mission to Copenhagen (1932–1935) and Brussels (1935–1936).  I discovered his connection to Fela from a bookseller blog post.

In his 1977 book, "Podróże do Włoch" ("Travel to Italy"), he talks about meeting up with her in Lucca.

In 2004, "Portrety na marginesach" ("Portraits on the Margin") was published. This was edited by Paweł Kądziela, and is a series of short biographies of people Iwaszkiewicz met during his life. One of these was of Aunt Fela.