Laurie Minor-Penland's "The Eniac" (Used with permission) https://www.flickr.com/photos/publicresourceorg/493824834/in/photolist-KCYVh
© Thinking Machines Corporation, 1989. Photo: Steve Grohe. (Used under the discretion of Tim O'Reilly) http://www.mission-base.com/tamiko/cm/cm-image.html
Computer History Museum
Combination of Creative Commons Share-Alike photo of bass clarinet by Frédéric Boulanger (Own work)
[GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons, and Public Domain sheet music.
Background - Steve Sundstrom's Abstractile