Last week was Louis Armstrong's birthday. Known as Satch, Satchmo and Pops, Armstrong lived from August 4, 1901 through July 6, 1971. Throughout his life, Armstrong paid particularly close attention to how his legacy would be curated which, for public records researchers, means that there are thousands of musical scores, collage art pieces, notes and other documents available (electronically as of November 2018) through the Louis Armstrong House Museum. The bottom line for researchers: personal archives are often donated to libraries throughout the world and are excellent resources for learning about both the people who created the archive and the people they knew.
More on the Louis Armstrong House Museum and its collections here: