Professor Mayer's topophone: 1880. This image has been reproduced many times in the past, but as it is the earliest audio-location device I have found so far, so here it is. It was devised to assist navigation in fog. I have no information on its success or otherwise. Image from Scientific American 1880.
Marianne Berger Woods, Professor of Art, tracks the legacy of 1930s black texan muralist Aaron Douglas. Woods argues Douglas paved the way for a greater appreciation of the black arts in the 1930s and is regarded by many as the “father” of the Harlem Renaissance, and yet he is still relatively unknown to fellow black Texans. In this post she looks at why Aaron Douglas has not been recognised by Texan public institutions and the ongoing impact this has on his legacy eighty years later.