Software and Documentation, Software Toolworks, REACH Modem and File Transfer Program | Smithsonian Institution
Erin Bates on Twitter: "Exhibit X: The dial-up modem. This gadget's anthem was a dissonant tune of screeching-cat-being-run-over and notes of grinding bones. I couldn't find a suitable modem photo. So, instead,
Modem/Software Source List
Der 56k Modem Klang - The 56k dialup modem sound - YouTube